If you are a beginner, you can modify this movement by using your hands for support or bending your legs slightly at the knee to perform a knee tuck.
During this movement, your upper body remains on the mat as you contract your abs, bringing your legs toward your chest.
This Pilates scissors exercise is great for targeting both the upper and lower abs, as well as the obliques. The criss-cross motion will also give you a good stretch in your hamstrings and hip flexors.
This compound double leg lift movement works both your upper and lower abdominal muscles, as well as the hip flexors.
The bicycle crunch effectively targets the lower abdominal muscles, as well as the obliques. This is a beginner move that requires only a mat.
You can perform bird-dogs anywhere that provides a comfortable place for your hands and knees, and a bit of extra room to extend your arms and legs.
You'll keep your torso still and your abdominal muscles contracted, extending and retracting your opposite arms and legs, challenging your stability by preventing your body from rocking back-and-forth.
Performed from a plank position, mountain climbers involve bringing one knee to the chest then back out again, speeding up each time.
The exercise is performed on a mat, with your legs extended, and your head and shoulders lifted.