Better sleep can improve your immune system.

I've got hundreds of people that come out here and say, "I can't sleep in a regular mattress." I call them the next day if they're in the MacZcliner.

They said, "Miraculous, Mack. First night I've slept 7 hours in years."

Better sleep can definitely improve your immune system. It helps your body repair at night. When you sleep, your body's hard at work repairing, fighting off diseases, fighting off cells that are coming at you to do harm to your body.

Get a great night's sleep every night. Your immune system will definitely improve.