Extension and flexion of one leg in push-up position alternating ► mountain climber

Individual work

Push-up position, legs resting on the exercise ball (shins), alternately bring one knee to the arms (chest height)/bend the leg.

Attention:
Head, shoulders, buttocks and feet form a line, no hollow back, actively tense the torso. To prevent the ball from rolling away, you can lean it against a wall.

Lighten:
Support in place (without tightening the leg); exercise ball closer to the hips.

Harden:
Additional weight (on the back); tighten both legs simultaneously (roll the ball towards the body); unstable support for the arms.

1 exercise ball

1 weight vest/weight disc/sandbag ► to make the exercise more difficult (additional weight)
1 balance cushion/balance board ► to make the exercise more difficult (unstable base)