HOLD THE LINE.
Plank challenge: up to 8 minutes total.
Three, five or eight minutes of plank, added up hold by hold. Simple to explain, brutal to finish.

THE CHALLENGE
Plank. Add up your holds until you reach the total.
- LEVEL 13 minutes of plank in total.
- LEVEL 25 minutes of plank in total.
- LEVEL 38 minutes of plank in total.
WHY IT'S HARD
A measurable core workload in repeatable sets.
DO IT RIGHT
Controlled form on every rep. Rest as needed between sets. Stop for pain, dizziness or illness; an unfinished day is fine. Scale the movement, never the honesty.
HOW IT WORKS ON HARD.
Everyone gets the same challenge on the same day. Say I'M IN, take as long as it takes, then say I DID IT on your word. Your friends see you show up.
ON THE RECORD
IT COMES BACK. NOBODY KNOWS WHEN.