If the average width of the measured groove widths exceed 0.035” (0.889 mm) then the club is non-conforming. If any single measured groove width exceeds 0.039” (1.0 mm) then the club is non-conforming ...
We’ve all heard of “exercise snacks” — the idea that short movement breaks during the workday can deliver a range of health benefits. But another minimalist method, used by the U.S. Navy SEALs and ...