Vitamin D, Magnesium, Tennis

https://articles.mercola.com/sites/articles/archive/2024/04/05/micronutrients-exercise-ameliorate-aging.aspx?ui=27057712a486033c4a05c8837e7ede644edeb120544f6ca59a8ed6d7194f7d34&sd=20240220&cid_source=dnl&cid_medium=email&cid_content=art1HL&cid=20240405_HL2&foDate=false&mid=DM1553024&rid=2088153077

Vitamin D good for mental health

https://articles.mercola.com/sites/articles/archive/2024/12/23/vitamin-d-deficiency-mental-illness.aspx

https://chemtrails.substack.com/p/vitamin-d-is-rat-poison-the-fraudulent

Vitamin D2 from plants

https://en.wikipedia.org/wiki/Ergocalciferol

Vitamin D3 from animals

https://en.wikipedia.org/wiki/Cholecalciferol