Complete Guide: Lean Body Mass Calculator for Cutting Phase
Monitor lean mass during your cut. Ensure your deficit is burning fat, not muscle. Adjust your approach based on LBM trends.
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Expert Tips for Cutting Phase
- ✓Check LBM every 2 weeks during cutting to catch muscle loss early
- ✓If LBM drops significantly, reduce deficit or add diet break
- ✓Maintain or increase training intensity to signal muscle retention
- ✓Higher protein during cuts (1-1.2g/lb minimum) preserves LBM
- ✓Some LBM loss is normal when getting very lean - minimize it
- ✓Rapid weight loss usually means significant LBM loss
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Frequently Asked Questions
How much LBM loss is acceptable during a cut?
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Ideally zero, but practically 1-3 lbs over a 12-16 week cut is normal. More than this suggests your approach needs adjustment.
Why am I losing LBM even with high protein?
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Deficit may be too aggressive, training intensity dropped, or you're getting very lean (sub-10% for men). Consider diet break or slower cut.
Can I gain LBM while cutting?
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Unlikely unless you're a beginner, returning from break, or significantly overweight. Experienced lifters should focus on retention, not growth.
How does rate of weight loss affect LBM?
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Faster loss = more muscle loss. Aim for 0.5-1% body weight per week maximum. Slower is better when already lean.
Should I do cardio during a cut for LBM?
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Some cardio is fine, but excessive cardio can compromise LBM. Prioritize resistance training and use cardio sparingly for additional deficit.
Looking for the standard lean body mass calculator?
Go to Main Lean Body Mass Calculator