Exercise is mostly good for your heart but heavy cardio training (say for marath...

		PaulHoule on Oct 11, 2022 \| parent \| context \| favorite \| on: Ask HN: How did you stop drinking? Exercise is mostly good for your heart but heavy cardio training (say for marathons) can cause problems, see https://bjsm.bmj.com/content/55/21/1233 My doc told me I should train for an hour a day but not two hours a day.