Was so proud to see that Dragon Door chose to include my endorsement of Dan John's Hardstyle Kettlebell Challenge book on the promo page and within the book itself. Here's how I feel about the book and how much I would recommend that you check it out if you are even vaguely interested in kettlebells! If you love working with kettlebells or are an instructor, then this is … [Read more...] about The Hardstyle Kettlebell Challenge (book) by Dan John, Master RKC