For many people the sit-ups are the most disliked exercise, and yet many want a straight and sturdy stomach. Fortunately, fitness experts have found a solution which, they claim, can replace even a 1,000 sit-ups.This is a static exercise in which all the weight of the body … [Read more...] about THIS EXERCISE IS MORE POWERFUL THAN 1,000 SIT-UPS: SPARE 60 SECONDS A DAY AND IN ONLY A MONTH YOU WILL HAVE A FLAT STOMACH!