Inchworm
Inchworm is a great exercise used to warm up the entire muscular system. It focuses primarily on increasing flexibility throughout one's hamstrings as well as increasing strength within one's shoulders, chest, and deltoids.
X Abs provides strength to the core by using upper body and lower body movements. This exercise is also good to provide flexibility, coordination, and stability.
Inchworm is a great exercise used to warm up the entire muscular system. It focuses primarily on increasing flexibility throughout one's hamstrings as well as increasing strength within one's shoulders, chest, and deltoids.
Crunch is a classic core exercise that explicitly trains your abdominal muscles - part of your core. It also includes your oblique muscles on the sides of your trunk and the muscles in your pelvis, lower back, and hips.
Russian Twist strengthens your core, obliques, and spine. It's a total core exercise that also works your balance, builds stability in your spine, and trims your mid-section all at once.