Back in my karate days, we used to do an exercise to “toughen” our arms: we’d hold them out and our partners would strike them with the knife edge of their hands. At first, this leaves bruises. When I went … Continue reading
Back in my karate days, we used to do an exercise to “toughen” our arms: we’d hold them out and our partners would strike them with the knife edge of their hands. At first, this leaves bruises. When I went … Continue reading
