New Study Reveals the BEST Exercise to Reverse Skin Wrinkles

The speaker walks through a series of studies culminating in the new head‑to‑head trial. He notes that while all exercise is beneficial, the smartest approach is to not ditch aerobic training even though resistance training adds a unique benefit for skin thickness. He underscores that each type of exercise changes the cocktail of circulating factors uniquely — like IL‑15 from aerobic and blyan boost from resistance. Relying solely on one would miss the full spectrum of skin anti‑aging benefits. He thus recommends a combined regimen, aligning with general exercise guidelines for health. He also hints that this may be a general principle for other organ benefits, but focuses on skin. The message is actionable: incorporate both modalities into a weekly routine.

The speaker explains that the 2015 cross‑sectional study found habitually active people had a thinner outer dead‑skin layer and a thicker underlying dermis — signs of youthful skin. To test causation, they enrolled elderly inactive adults in a 3‑month endurance program, which reproduced the skin changes and boosted collagen content and mitochondrial health. The researchers hypothesized a circulating factor, and narrowed it down to IL‑15, a myokine produced by skeletal muscle during exercise. In mice, they confirmed that exercise increases IL‑15, which acts on skin fibroblasts to enhance mitochondrial function and rejuvenate the dermis. This was the first direct demonstration that exercise‑derived signals can remodel skin aging at a cellular level.

The speaker references a 2023 study where an 8‑week exercise program improved skin moisture compared to non‑exercising controls. A more recent (unspecified) study also noted a link between more exercise and improved skin hydration. This suggests that exercise may support the skin’s barrier function and water retention, which decline with age. While the exact mechanism wasn’t detailed, it may relate to improved blood flow, sweat gland function, or systemic anti‑inflammatory effects. The speaker presents it as another dimension of benefit, reinforcing that exercise is a comprehensive anti‑aging skin strategy.

The study included 60 inactive middle‑aged women, randomized to aerobic training or resistance training, both twice per week for 16 weeks. Both groups improved skin elasticity and the structural organization of the dermal layer to a similar extent. However, only resistance training significantly increased dermal thickness. The researchers identified the mechanism: resistance training reduces certain blood‑borne chemicals that suppress blyan (a proteoglycan critical for collagen formation and dermal thickness). By lowering these suppressors, blyan levels increased, promoting thicker skin. Aerobic exercise did not have this effect, but it boosted other factors like IL‑15. The speaker emphasizes that this doesn’t mean we should ignore aerobic exercise; each type confers unique circulating factors, so the optimal strategy is to combine both. This study is the first to dissect modality‑specific skin aging benefits.