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💪 Exercise & Fitness

Cardio vs. Weights on TRT: Which is better for fixing body composition?

Asked in r/Testosterone · Answered by the HeydayMD team ·

I just started my TRT protocol and want to make the most of it to lose my 'dad bod' and gain muscle. Should I be focusing more on heavy lifting or hitting the treadmill to see the fastest changes?

The short answer

While both are essential, resistance training is generally superior for optimizing body composition on TRT because testosterone significantly enhances muscle protein synthesis and hypertrophy. Strength training leverages the hormonal advantage of TRT to build lean mass, which naturally increases your resting metabolic rate and fat-burning potential. At HeydayMD, we recommend a balanced approach where heavy lifting is supported by zone 2 cardio for heart health, ensuring your protocol maximizes both aesthetic results and cardiovascular safety. Our clinical team works with patients to fine-tune their dosage alongside these lifestyle factors for the best possible outcomes.

Every body is different. A licensed provider can look at your own labs and symptoms.

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The information on this page is for educational purposes only and is not medical advice. Questions are paraphrased from public Reddit discussions, which are linked for reference — HeydayMD is not affiliated with Reddit. Answers are general education written by the HeydayMD team, not individual guidance. Always talk to a licensed healthcare provider before making treatment decisions.