I read this last month, which certainly interest me. These 2 ultramarathoner age 61 & 43 both run this distance over a period of 20days, & in the end the 61 yr old Lim Nghee Huat lost only 2 kg & 43 yr old Yong Yuen Cheng has not lose any weight at all. We were all surprised !
So from this we can see that diet contribute much more to weight loss than exercises. It paints a clearer picture & that's great.