I was using my fins two or three times a week for hard kick or sprint sets and had to cut back when I started developing pain in the hollow on the inside back of my foot, behind the ankle bone (posterior tibial tendonitis, per dr. google).
I was using my fins two or three times a week for hard kick or sprint sets and had to cut back when I started developing pain in the hollow on the inside back of my foot, behind the ankle bone (posterior tibial tendonitis, per dr. google).