These 7 Celebrities Share A Secret To Success

And you can try it tonight too.

There’s more evidence today than ever before that sleep ― and more specifically getting enough of it ― is a key pillar of staying healthy.

Snoozing seven to nine hours per night (what experts recommend) has been shown to help with everything from learning to focus to keeping emotions in check to avoiding catching colds to regulating metabolism to preventing chronic diseases like obesity, diabetes, heart disease and some cancers.

And while data suggests more than a third of Americans get less than they should, personal testimonials ― like these below from top athletes and other performers ― hint that others are waking up to all the reasons getting enough sleep can be so helpful.

Here’s what some of the biggest sports and entertainment stars have said about sleep:

1. Matt Ryan, Atlanta Falcons quarterback

The <a href="http://www.espn.com/blog/atlanta-falcons/post/_/id/23262/matt-ryan-sleep-the-no-1-most-important-thing" target="_blank">football star told ESPN</a> in October.
The football star told ESPN in October.

2. Lin Manuel Miranda, actor and Hamilton creator

The <a href="http://www.huffingtonpost.com/entry/lin-manuel-miranda-sleep_us_5783fcdce4b0344d51508611">actor said in an interview with The Huffington Post</a>&nbsp;in July.
The actor said in an interview with The Huffington Post in July.

3. Serena Williams, professional tennis player

The <a href="http://www.huffingtonpost.com/2012/04/30/serena-williams-tackles-sleep-problems-with-sheets_n_1465015.html">tennis star told HuffPost</a> in 2012.
The tennis star told HuffPost in 2012.

4. Kim Cattrall, actress

The <a href="http://www.huffingtonpost.com/entry/kim-cattrals-bedroom-struggle_us_5759e06be4b0e39a28ad196e">actress said during a BBC Woman&rsquo;s Hour broadcast</a> in April.
The actress said during a BBC Woman’s Hour broadcast in April.

5. Tom Brady, New England Patriots quarterback

The <a href="http://parade.com/476513/lhochwald/tom-brady-likes-his-bedroom-cold-and-dark-like-a-bear/" target="_blank">football star told Parade</a> in May.
The football star told Parade in May.

6. Novak Djokovic, professional tennis player

The <a href="http://www.huffingtonpost.com/entry/djokovic-training-secrets_us_57c88f2fe4b0e60d31de3dc0?utm_hp_ref=sleep--wellness">tennis star said in his 2013 book</a>, &ldquo;<a href="https://www.amazon.com/Serve-Win-Gluten-Free-Physical-Excellence/dp/0345548981" target="_blank">Serve to Win</a>.&rdquo; &nbsp;
The tennis star said in his 2013 book, “Serve to Win.”  

7. Jennifer Aniston, actress

The <a href="http://www.vogue.com/13422217/jennifer-aniston-90s-beauty-hair-makeup/" target="_blank">actress told Vogue</a> in March.
The actress told Vogue in March.

Sarah DiGiulio is The Huffington Post’s sleep reporter. You can contact her at sarah.digiulio@huffingtonpost.com.