Poor sleep and excess weight often reinforce each other – creating a vicious cycle of fatigue, cravings, and reduced physical activity. A new network meta-analysis of 17 randomized controlled trials with 927 adults now shows that combined endurance and strength training most reliably improves subjective sleep quality, closely followed by strength training alone. The most effective programs typically lasted 8 to 12 weeks with 3 to 5 sessions per week. Important: More isn't always better – the...

An RCT with 309 older adults shows: moderate and heavy resistance training can measurably reduce biological brain age by up to 2.3 years.

Meta-analysis: Replacing saturated fat with PUFAs reduces heart attack, stroke & mortality in high-risk patients – no effect at low cardiovascular risk.