Lie flat on your back with your legs extended and your arms at your sides.
Keeping your legs straight, slowly lift them towards the ceiling until they are perpendicular to the floor.
Hold the position for a moment, engaging your core muscles.
Slowly lower your legs back down to the starting position without letting them touch the floor.
Repeat for the desired number of reps.
Lie flat on your back with your hands behind your head and legs extended.
Lift your shoulders off the ground and bring one knee towards your chest while simultaneously twisting your torso to bring the opposite elbow towards the knee.
Extend the bent leg while bringing the other knee towards your chest, twisting to the opposite side.
Continue alternating sides in a smooth, controlled motion, as if pedaling a bicycle.
Repeat for the desired number of reps.
Lie on your back with your hips and knees bent at a 90-degree angle, feet off the ground.
Place your hands flat on the floor beside you for support.
Use your lower abs to lift your hips off the floor, bringing your knees towards your chest.
Slowly lower your hips back to the starting position, keeping your knees bent at 90 degrees.
Repeat for the desired number of reps.
Stand with your feet shoulder-width apart, hands on your hips or behind your head.
Lift one knee towards your chest while engaging your core muscles.
Lower the leg back to the starting position and immediately lift the other knee towards your chest.
Continue alternating knee raises in a controlled manner.
Repeat for the desired number of reps.
Start standing with your feet hip-width apart.
Bend at the hips and place your hands on the floor in front of you.
Walk your hands forward until you are in a plank position, keeping your core engaged.
Walk your hands back towards your feet and stand up straight.
Repeat for the desired number of reps.
Start in a high plank position with your hands directly under your shoulders.
Lower one arm to place your forearm on the ground, followed by the other arm, coming into a forearm plank.
Push back up to the starting high plank position one arm at a time.
Keep your core engaged and your body in a straight line throughout the movement.
Repeat for the desired number of reps.
Lie on your side with your legs stacked and your elbow directly under your shoulder.
Lift your hips off the ground, forming a straight line from your head to your feet.
Hold the position while keeping your core engaged.
Lower your hips back to the ground to complete the rep.
Repeat for the desired number of reps before switching sides.
Start in a reverse plank position with your hands and feet on the floor, facing upward.
Lift one leg off the ground, keeping it straight.
Lower the leg back down and lift the other leg.
Continue alternating legs in a controlled manner.
Repeat for the desired number of reps.
Start in a forearm plank position with your body in a straight line.
Bring one knee towards your elbow on the same side.
Return your leg to the starting position and repeat with the other leg.
Continue alternating sides while keeping your core engaged.
Repeat for the desired number of reps.
Start in a high plank position with your hands directly under your shoulders.
Bring one knee towards your chest while keeping your core engaged.
Return your leg to the starting position and repeat with the other leg.
Continue alternating sides in a smooth, controlled motion.
Repeat for the desired number of reps.
Lie on your back with your legs extended and arms at your sides.
Lift your legs towards the ceiling, keeping them straight.
Use your lower abs to lift your hips off the ground, pushing your feet towards the ceiling.
Slowly lower your hips and legs back to the starting position.
Repeat for the desired number of reps.
Lie flat on your back with your legs extended and your arms at your sides.
Lift your legs off the ground a few inches.
Quickly scissor your legs by crossing one over the other, then alternating sides.
Keep your core engaged throughout the movement.
Repeat for the desired number of reps.
Lie on your back with your hands under your hips for support.
Bring your knees towards your chest, then extend your legs straight out.
Continue the motion, bringing your knees in and extending your legs out.
Keep your core engaged throughout the movement.
Repeat for the desired number of reps.
Stand with your feet shoulder-width apart, hands behind your head.
Lift one knee towards your elbow on the same side, crunching your obliques.
Return to the starting position and repeat on the other side.
Continue alternating sides in a controlled manner.
Repeat for the desired number of reps.
Lie flat on your back with your legs extended and arms at your sides.
Lift your legs a few inches off the ground.
Draw small circles with your legs, keeping them straight.
Reverse the direction of the circles after a set number of reps.
Keep your core engaged throughout the movement.
Lie flat on your back with your legs extended and arms out to your sides.
Lift your legs towards the ceiling, keeping them straight.
Slowly lower your legs to one side without letting them touch the floor.
Bring your legs back up and lower them to the other side.
Continue alternating sides in a controlled manner.
Lie on your back with your legs extended and arms overhead.
Lift your legs and shoulders off the ground, keeping your lower back pressed into the floor.
Hold the position while engaging your core muscles.
Maintain a hollow body shape throughout the hold.
Hold for the desired amount of time.
Sit on the floor with your legs extended and hands on the floor behind you for support.
Pull your knees towards your chest while leaning back slightly.
Extend your legs back out without letting them touch the floor.
Continue the motion, tucking your knees in and extending them out.
Repeat for the desired number of reps.
Sit on the floor with your legs extended and hands clasped in front of you.
Lean back slightly and lift your legs off the ground.
Twist your torso to one side while bringing your legs to the opposite side.
Twist to the other side, alternating the motion.
Keep your core engaged throughout the movement.
Lie flat on your back with your legs extended and arms overhead.
Simultaneously lift your legs and upper body towards each other, reaching your hands towards your feet.
Lower back down to the starting position with control.
Keep your core engaged throughout the movement.
Repeat for the desired number of reps.
Lie on your back with your legs extended and arms overhead.
Lift your legs and shoulders off the ground, maintaining a hollow body shape.
Gently rock back and forth, using your core to control the movement.
Keep your lower back pressed into the floor throughout the exercise.
Repeat for the desired number of reps.
Start standing with your feet shoulder-width apart.
Lower into a squat and place your hands on the floor in front of you.
Jump your feet back into a plank position.
Perform a push-up, then jump your feet back towards your hands.
Explode into a jump, reaching your hands overhead.
Lie flat on your back with your knees bent and feet flat on the floor.
Hold a weight plate or dumbbell at your chest.
Perform a crunch by lifting your shoulders off the ground towards your knees.
Slowly lower back down to the starting position.
Repeat for the desired number of reps.
Lie on your side with your knees bent and a weight plate held at your chest.
Crunch your upper body towards your hips while engaging your obliques.
Slowly lower back down to the starting position.
Repeat for the desired number of reps before switching sides.
Stand with your feet shoulder-width apart, holding a dumbbell in each hand at your sides.
Walk forward, keeping your core engaged and your posture upright.
Continue walking for the desired distance or time.
Keep your grip strong and your shoulders relaxed.
Stand with your feet shoulder-width apart, holding the end of a barbell in both hands.
Rotate your torso to one side, bringing the barbell towards your hip.
Rotate to the other side, keeping the barbell in front of you.
Continue alternating sides in a controlled manner.
Keep your core engaged throughout the movement.
Attach a handle to the high pulley of a cable machine.
Stand sideways to the machine, grabbing the handle with both hands.
Pull the handle down and across your body in a chopping motion.
Return to the starting position with control.
Repeat for the desired number of reps before switching sides.
Attach a rope handle to a high pulley on a cable machine.
Kneel facing the machine, grabbing the rope handles with both hands.
Pull the handles down towards your knees, curling your torso forward.
Squeeze your abs at the bottom of the movement.
Slowly return to the starting position.
Attach a handle to the high pulley of a cable machine.
Stand sideways to the machine, holding the handle with both hands at chest height.
Twist your torso to pull the handle across your body to the opposite side.
Return to the starting position with control.
Repeat for the desired number of reps before switching sides.
Attach a rope handle to a high pulley on a cable machine.
Kneel facing the machine, grabbing the rope handles with both hands.
Pull the handles down towards your knees, curling your torso forward.
Squeeze your abs at the bottom of the movement.
Slowly return to the starting position.
Attach a resistance band to a low anchor point and lie on your back with the band around your ankles.
Lift your legs towards the ceiling against the resistance of the band.
Slowly lower your legs back down without letting them touch the floor.
Keep your core engaged throughout the movement.
Repeat for the desired number of reps.
Attach a resistance band to a high anchor point and kneel facing away from the anchor.
Hold the band handles and pull them down towards your knees, curling your torso forward.
Squeeze your abs at the bottom of the movement.
Slowly return to the starting position.
Repeat for the desired number of reps.
Lie on your side with your top leg resting on a bench or elevated surface.
Support your body on your forearm and lift your hips off the ground, forming a straight line from your head to your foot.
Hold the position while engaging your core and inner thigh muscles.
Repeat for the desired amount of time before switching sides.
Stand with your feet shoulder-width apart, holding the end of a barbell in both hands.
Rotate your torso to one side, bringing the barbell towards your hip.
Rotate to the other side, keeping the barbell in front of you.
Continue alternating sides in a controlled manner.
Keep your core engaged throughout the movement.
Lie flat on your back with your knees bent and feet flat on the floor.
Hold a kettlebell with both hands at your chest.
Perform a crunch by lifting your shoulders off the ground and bringing the kettlebell towards your knees.
Slowly lower back down to the starting position.
Repeat for the desired number of reps.
Sit on an exercise ball with your feet flat on the floor.
Roll back on the ball until your lower back is supported.
Perform a crunch by lifting your shoulders off the ball, engaging your abs.
Slowly lower back down to the starting position.
Repeat for the desired number of reps.
Lie on your back with your legs extended and arms overhead, holding an exercise ball.
Lift your legs and upper body towards each other, transferring the ball from your hands to your feet.
Lower your legs and arms back to the starting position with the ball between your feet.
Repeat the motion, transferring the ball back to your hands.
Continue alternating transfers for the desired number of reps.