Stewart loves starting her day with 20 minutes on the treadmill so I was walking by 7 a.m. Although I ... my abs hurt only 20 minutes into my workout — but these exercises were pretty hardcore.
Losing a few kilograms rapidly is the ultimate fitness test ... it’s a serious workout that burns over 13 calories per minute! Try a Tabata-style routine: jump at a fast pace for 20 seconds ...