If you're feeling tired or hungry all the time, you may not be getting enough protein in your diet.
That's according to health experts who say protein helps us feel balanced and energetic.
We don't have to eat the whole cow but sometimes we're left wondering if we're eating the right amounts of the good stuff.
The good news is that your body will likely tell you when you need to up your protein game.
Experts say you could experience shortness of breath or lightheadedness, both symptoms of anemia which is caused by lack of protein.
You could also be hungrier and running around in search of sugar.
That's because snacks heavy on carbs and sugar won't curb those cravings.
Instead reach for protein packed foods like yogurt, peanut butter or nuts.
Bustle reports that a lack in protein can cause a swelling condition called edema . Try upping your protein intake to see if the swelling goes away
And if bad hair isn't a big enough sign, we don't know what is. Hair certainly needs protein to grow.
So if you're lacking on these biomolecules, your Instagram could go from #longhairdontcare to #nohairunfair