- 30 sec L-sit with a 5 kg plate
“At first you feel like you could do this all day..aaand then all of sudden not so much
”
Try another of Thuri’s workout challenges:
Thuri Helgadottir’s AMRAP Challenge: Try to Beat Her!
The post 30 Second Core Workout Challenge from Thuri Helgadottir appeared first on BOXROX.