13 things you should never do before bed

12. Fight

There’s a good reason couples are told to never go to bed angry. Stress is a major cause of insomnia. If a conversation is stressful, it will elevate cortisol and other stress hormones impeding your ability to fall asleep. In addition, angry people tend to ruminate, or play over thoughts again and again in their minds, which can also make falling asleep difficult.

Try to hash out any problems earlier in the night, and saving important decision-making or serious conversations for days when you have more time to reflect and relax afterward.