Ok just a bit of History first 67 yr old male paddling for 7 yrs flat water 14 ft bark dominator board all for fitness 3 x 1 hrs sessions / week goe hard for my age. Feet mostly stationery during paddle and its only the left ankle and had a motorbike accident 50 yrs ago broke left Tibia ran for years with not perfect alignment at that ankle.
So ok while paddling, but next day walking with difficulty and gets really sore after 30 mins of walking, tried walking on soft sand but went too hard on that and was sore for days. Planning on doing my own rehab calf raises etc also teach pilates and have yoga and PT qualifications.
Luv Sup Paddling