Heres what a sleep expert has to say.
Inadequate sleep
While this one sounds a bit obvious, you may not realize how much its at play.
Sleeping a few hours and tossing and turning are only part of the equation.

Your body is working harder than you probably realize!
Protein, on the other hand, is more likely to give you sustainable energy, he adds.
Additionally,lacking iron, vitamin B12, and vitamin Dcan leave you feeling zapped.

board-certified psychiatrist, neuroscientist, entrepreneur, and inventor, and co-founder &
Eating foods your body doesnt like can hurt you, too, even if youre not full-blown allergic.
Its Amazing How Its All Connected.
People who drink caffeine all the time can become very tolerant to it, Dr. Rabin says.

I would have a cup of coffee and immediately I would feel tired.
Research backs this up.
These are only a few examples.

In other words, theres no need to feel bad about taking an afternoon snooze.
He encourages optimizing those areas.
He also suggests sleeping no longer than 90 minutes, max.

board-certified psychiatrist, neuroscientist, entrepreneur, and inventor, and co-founder &
(Even 90 minutes could be pushing it), he says.
These rules arent hard and fast for everyone, though.
Ultimately, if you enjoy a daily nap that makes you feel better, great!

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