Forget sit-ups — you just need 15 minutes and 1 kettlebell to strengthen your core with this standing abs workout
All you need for the workout is one of the best kettlebell. Pick a weight that you can lift and hold above your head for 60 seconds at a time comfortably. You can also use a dumbbell for the workout, ...
No, not sit-ups — calisthenics coaches share the 3 ab exercises you need to build a strong core
Build bulletproof core muscles using these three exercises without weights, say the calisthenics instructors known as the Calisthenics Family. In their eyes, these are the three best calisthenics core ...
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