BESTRONGER

Mavemuskler · Bodyweight

Flutter-spark

Flutter-spark
Muscle
Mavemuskler, Ben
Equipment
Bodyweight
Measured in
Reps

How to do it

Læg dig på ryggen med armene ud til siden. Løft dine strakte ben skiftevis, et ad gangen.

Run it with a timer

Every session, counted out loud.