isometric videos

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'10 Minute Isometric Core Workout | No Equipment'
'10 Minute Isometric Core Workout | No Equipment' 12:01 Jan 1
'PLANK & WALL SIT CHALLENGE at Home | Can you last 15 minutes?'
'PLANK & WALL SIT CHALLENGE at Home | Can you last 15 minutes?' 17:05 Aug 2, 2023