How do you advance mountain climbers?

Start by pulling your right leg up to your chest area and immediately return it to the starting position. Without hesitation or rest, pull your left leg up to your chest and then return it to the starting position. Continue alternating legs while holding your head up looking straight ahead.6 Haz 2019

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What are plank jacks good for?

Plank jacks are a combined cardio and core-strengthening exercise . They can help you strengthen the muscles of both the upper and lower body. Adding plank jacks to your exercise routine a few times a week may also increase core strength and stability, burn calories, and help reduce fat.

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