Your hair, that is. According to a recent report in the British Journal of Dermatology, your hair hits peak anagen – i.e. growth – phase during spring. Take advantage! To promote thicker, healthier hair, make a concerted effort to eat more protein (you know where to find that), zinc and iron (spinach is a good source of the latter), all of which may promote hair growth, says dermatologist Jennifer Chwalek. Have a spinach salad with salmon or grilled chicken twice a week, says nutritionist Keri Gans, and you could notice a difference by summer. Otherwise, try protein-rich OGX Nourishing Coconut Milk Anti-Breakage Serum (R170) for stronger, longer locks.