Do weighted vests really work? Here's why trainers swear by working out with ones from Omorpho, TRX, Go Ruck and more.

What makes the vest so effective is its simplicity. You wear it, and suddenly every movement becomes harder. Your heart rate ...

Advanced fitness enthusiasts, on the other hand, could perform high-rep sets and even incorporate harder variations like weighted sit-ups. Is 100 sit-ups a day good? Performing 100 sit-ups a day ...