Sit on an exercise mat and engage your core. Lean backward to create a V-shape position. If you want to, lift your feet away ...
Whilst almost anyone can do a crunch or a sit-up, for most of us the higher reps remain the preserve of avid gym-goers, Olympians and celebrities. However, in reality, physiologists and personal ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback