Core Crusher 21
Fire up your abs and build a rock-solid core in just 21 days. Core Crusher 21 gives you seven rotating workouts designed to target every part of your midsection — upper abs, lower abs, obliques, and deep core stabilizers. With short, intense daily sessions, this plan delivers results without the fluff.
Plan Includes
7 unique core-focused workouts rotating over 21 days
Daily ab routines (10–15 minutes max) — perfect as add-ons
Minimal equipment needed — bodyweight or optional dumbbell
How it works
- Purchase the plan.
- Rotate through 7 different ab workouts over 21 days for consistent variety
- Each workout is short, focused, and designed to stack with your main training or do solo
- Follow along in the Fit U app — track your progress and stay on pace daily
3 months
One Time Payment
$29.99
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