You only need 10 minutes and these 4 standing abs exercises to strengthen your core and boost your metabolism
Most of these routines are bodyweight workouts ... who like to mix cardio with abs exercises is this 20-minute standing core ...
You don’t need sit-ups to build a stronger core — just use this 5 minute bodyweight workout instead
and even sitting or standing. Bodyweight core exercises, like the ones above, help develop functional strength that transfers ...
Women's Health9d
The best 20-minute upper-body workout: 17 bodyweight strengthening exercises
How to: Start standing on the mat, feet hip-width apart. Bring elbows together and up, arms in a 90-degree angle. Keeping core stable, open elbows as wide as possible and then bring them together ...