Robyn Mendenhall Gardner was amazed when what started off as a monthlong ab workout challenge between friends and family caught fire on the Web. The Montana mother of eight told Shots she came across ...
Incorporate this 10 Minute Ab Challenge into your workout routine 2- 3x per week.
A CSCS trainer shares an 8-minute standing routine that targets abdominal fat after 50 -- no machines or floor work needed.