I finish riding a high quality upright bike at the gym and just sat still. I needed to stretch so I leant backwards at almost 45 degrees, putting almost all my upper body weight on my stomach muscles. My stomach muscles subsequently vibrated rapidly, as if they wanted to burst out my chest.
The questions is this does this do any good? If so its really simple any easy to do.
The questions is this does this do any good? If so its really simple any easy to do.