A 2025 cohort study of 291 Canadian youths (ages 10–18) found that sleeping more than 9.9 hours per night in the first two weeks after a concussion was linked to more severe symptoms and a higher risk of lingering effects at four weeks.

A 2025 study cited in Muscle & Fitness by the National Library of Medicine found that drinking green tea daily for 20 years raised testosterone levels by 30% in men compared to non-drinkers.

A 2023 study by Paz V et al. linked regular daytime napping to larger brain volume. Analyzing 378,932 people aged 40-69 from the UK Biobank, researchers used Mendelian randomization to find that those genetically prone to napping had brains 15.8 cm³ larger, equivalent to 2.6-6.5 years less brain aging.

Ashwagandha, a powerful herb used in traditional medicine, has been shown in a 2025 review to help reduce stress, fatigue, anxiety, and depressive symptoms. It also supports better sleep and sharper mental focus, boosting overall feelings of well-being—even for older adults aged 60–85.

A 2025 randomized, double-blind, placebo-controlled trial published in Nutrients found that supplementing with 100 mg each of vitamin B1 (thiamine) and B2 (riboflavin) daily for four weeks significantly reduced perceived stress and improved sleep quality in young adults.

A 2025 study in Nutrients found that adults who slept longer and had better sleep quality also had stronger handgrip strength—but only when they consumed more protein and followed a higher-quality diet.

A 2025 study from Université de Montréal, published in Communications Biology, revealed that consuming caffeine—even just a few hours before bedtime—can increase high-frequency brain activity during sleep. This is especially true for young adults, whose brains are more sensitive to stimulants.

A 2025 study from Uppsala University found that even short-term sleep deprivation raises inflammation-related proteins linked to cardiovascular disease, even in healthy young adults.