1. Do Crunches Lie on the floor (with or without a mat). Cross your arms in front of your chest. (Donot place both hands behind your head. Placing both hands behind your head can cause lower back prob… more →
Wellwisher's Weblogspremdotcom wrote 1 year ago: 1. Do Crunches Lie on the floor (with or without a mat). Cross your arms in front of your chest. (Do … more →