Testosterone spikes

Covers what “testosterone spikes” are, what actually causes short-term fluctuations, and how much they matter for muscle, energy, libido, and performance. Learn how training, sleep, stress, nutrition, and lifestyle influence testosterone over time versus brief, often overhyped boosts.

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Does having sex increase testosterone? The truth about bedroom habits and hormone levels

Does having sex increase testosterone? The truth about bedroom habits and hormone levels

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 23, 2025 · 11 min read

Sex and ejaculation can cause a short-lived testosterone rise of about 2 ng/mL, but levels typically return to baseline within 10–20 minutes, so it doesn’t meaningfully increase long-term testosterone. The bigger picture is a bidirectional feedback loop—testosterone drives libido, while arousal triggers a brief neuroendocrine surge—and why overall health often explains the “high T” sex-life ...

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