Willy Lewis, M.D.

Health & Medicine

Get fit by cycling: This is how often you should cycle per week to get fit

Health & Medicine

Hantavirus on a cruise ship: what’s behind it?

Health & Medicine

Do athletes really need more vitamins? What you need to know and when preparations are harmful

Health & Medicine

Psychologist: If you regularly say one of these 9 sentences, you are emotionally more stable than most others

Health & Medicine

3-second rule: This is what a study says about it

Health & Medicine

When is excess weight harmful to health?

Health & Medicine

Why good sleep acts like a daily therapy session for the brain

Health & Medicine

Blue light: how harmful is it really?