Start your planks by positioning yourself on the floor, face down, with your forearms and toes supporting your body weight.
Begin this next exercise lying on your back with your hands placed behind your head, and your knees bent with your feet flat on the floor.
Russian twists will have you sitting on the floor with your knees bent, your feet flat on the ground, and your hands together in front of your chest.
Begin mountain climbers in a pushup position with your hands shoulder-width apart and your body in a straight line from your head to your heels.
The reverse crunch starts with you lying on your back with your hands placed beside your hips and your knees bent at a 90-degree angle with your feet off the ground.
Begin on your back with your hands placed under your glutes or by your sides, and extend your legs.
Lay on your right side and start side planks. Support your upper body with your right hand and stack your feet on top of each other or slightly move the top foot forward.
Start by lying on your back with your arms stretched up toward the sky. Your knees should be bent 90 degrees, and your feet should be off the ground.