Shin splints feel simple, but they're a complex signal that your body's support system is overloaded, so here’s what’s really going on.

Half foam-roller, half calf-stretcher, this simple but effective accessory helps to alleviate symptoms of plantar fasciitis by improving circulation, foot posture and stretching the Achilles tendon.

"This year, I've actually seen more cases of posterior shin splints, which instead of your tibialis anterior is your tibialis posterior and it's behind your shin," the pro explained.