As a certified fitness trainer with over a decade of experience helping clients build sustainable strength, I highly recommend the plank. This powerhouse exercise tightens your abs while engaging multiple muscle groups for comprehensive training.
Traditional sit-ups were once the gold standard for abs, but modern experts advise against them for many people due to excessive strain on the back and neck.
Plank feeling boring? No way—check out these 7 dynamic variations >>
Which exercises do you do for your abs?
