30 day challenge · Strength
Plank Challenge
Twenty seconds on day one and five more each day. By day 30 you're holding for over two and a half minutes.
The calendar
The plan, a day at a time, from the next start.
30 day challenge · Strength
Twenty seconds on day one and five more each day. By day 30 you're holding for over two and a half minutes.
The plan, a day at a time, from the next start.