Quick and Effective Abs Workout

Strength can be measured by your bench press, and size by your biceps. But when it comes to looking lean, athletic, and well-conditioned, defined abs are the real standard. This 15-minute core workout requires no equipment and can be done anywhere. Clear some space and get ready for a fast, effective session. How to perform it: Complete all exercises back to back to finish one set. Once you complete the full round, rest for 30–60 seconds before starting the next set.