Light exposure for health: daylight, sleep and timing
How light exposure affects your circadian rhythm, sleep and alertness, how much daylight you need, whether blue light at night matters, and when to train.
#environment
Mold exposure: symptoms, testing and treatment
Mold exposure symptoms, whether a mold test is worth it, and what treatment works. What WHO, CDC and EPA say, what is unproven, and how to fix damp at home.
Red light therapy: what the evidence really shows
Does red light therapy help recovery or performance? What photobiomodulation studies show, how home panels differ from lab devices, and eye safety.
Reverse osmosis water: is it healthy to drink?
What a reverse osmosis water filter removes, what it doesn't, the WHO view on demineralised water, remineralisation, waste water and what athletes need.
Water quality and health: tap, bottled or filtered?
What really matters for drinking water quality and health, from microbes and lead to nitrates, PFAS and hardness, and how to check your own tap water.