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All the latest articles from our medical experts on testosterone, men's health, and longevity.

How many calories do you burn lifting weights, really?

How many calories do you burn lifting weights, really?

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Dec 06, 2025 · 12 min read

Harvard’s exercise tables estimate that 30 minutes of weight training burns about 112 calories for a 155‑pound man and about 133 calories for a 185‑pound man (roughly 223–266 calories in 30 minutes if the lifting is vigorous). That’s less per minute than running, but the payoff is that consistent strength training helps preserve muscle and ...

Can low testosterone cause joint pain?

Can low testosterone cause joint pain?

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Dec 06, 2025 · 13 min read

Low testosterone can contribute to joint pain by increasing chronic inflammation and weakening the muscle, bone, and cartilage support that stabilizes joints, and studies have linked low levels to about double the risk of developing osteoarthritis. If aching knees or stiff shoulders come with fatigue, lower libido, or shrinking strength, it’s worth seeing how hormones ...

Rectal delivery systems: Understanding the clinical role of suppositories in men’s health

Rectal delivery systems: Understanding the clinical role of suppositories in men’s health

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 05, 2025 · 12 min read

Rectal suppositories deliver medication through the highly vascular rectal mucosa, partially bypassing first‑pass liver metabolism so some drugs (such as anti‑inflammatories) can reach effective levels within 30–60 minutes while targeting pelvic tissues with fewer stomach side effects than oral pills. Here’s when they’re clinically useful for men (constipation, hemorrhoids, pelvic/prostate pain, even certain erectile treatments) ...

Why do i get so hot when i sleep: The science of night sweats and overheating

Why do i get so hot when i sleep: The science of night sweats and overheating

Dr. Jonathan Pierce, PhD avatar
Dr. Jonathan Pierce, PhD: Clinical Psychologist & Neuroscience Specialist
Dec 05, 2025 · 14 min read

You get hot in your sleep when your normal nighttime core-temperature drop of about 0.5–1.0 °C (1–2 °F) is disrupted, prompting the hypothalamus to open skin blood vessels and activate sweating to dump heat. The good news is that the trigger is often something changeable—like room setup, alcohol, stress, or a hormone/health issue—and the patterns ...

Does stress cause low testosterone in men? What science really shows

Does stress cause low testosterone in men? What science really shows

Dr. Alexander Grant, MD, PhD avatar
Dr. Alexander Grant, MD, PhD: Urologist & Men's Health Advocate
Dec 05, 2025 · 14 min read

Chronic psychological stress is linked to lower morning testosterone in men, largely because sustained HPA-axis cortisol output can suppress hypothalamic–pituitary–gonadal (GnRH/LH) signaling and reduce testicular testosterone production. Here’s how to recognize the stress–low T feedback loop and what actually helps break it. “Stress and testosterone talk to each other all day long. Short bursts of ...

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