Analysis Version
v1
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assertion
Analysis v1
Strong Support

If you exercise hard but don’t eat extra calories, your body can use stored fat to build muscle.

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Against

Evidence from Studies

Supporting (1)

20

Community contributions welcome

20

A Review of Strategies for Achieving Simultaneous Muscle Mass Gain, Maintenance, or Minimal Loss During Fat Reduction: Insights from the Last 5 Years

Systematic Review
Human

The study says you can lose fat and gain muscle at the same time with exercise and eating less, but the claim says you can do it while eating just enough to maintain weight — which wasn’t tested. Still, it’s close and suggests it might be possible.

Contradicting (0)

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Community contributions welcome

No contradicting evidence found

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