Summer Fridays' Marianna Hewitt and Lauren Ireland Share Their Must Haves

You've likely spotted an Oura Ring ($499) on the hands of some of your favorite celebrities — possibly without even knowing it. The ring looks like a piece of jewelry but is actually an all-encompassing health tracker. "I wear it 24/7, day and night, and the weekly insights and monthly reports have really helped me work on my daily habits," Hewitt says. She particularly loves the ability to track and score her sleep. "I know how vital sleep is as a part of my overall wellness routine."

Pro Tip: Oura Rings come in five colors: silver, black, stealth (a slate gray), gold, and rose gold. For more information, read our full Oura Ring review.