The document provides 5 tips for healthy sleep: 1. Don't sleep with a watch due to potential radioactivity effects. 2. Don't sleep with a bra to reduce breast cancer risk. 3. Don't sleep with your phone due to potential effects from electromagnetic waves. 4. Don't sleep with makeup on as it can cause skin breathing and sweating problems. 5. Don't sleep with someone else's spouse or you may not wake up.