I've been kettlebelling for 3+ years, but my main sport is distance running (5-6 days a week, between 25-60 miles). I've run the Simple program (not Sinister yet) to go from 12kg to 20kg. I'll alternate with a month or two of including the other basics—e.g., clean 5/5 x 10; press 5/5 x10; goblet...