Authors Dean Zweck Dean Zweck, BSc, CPT, has been in the industry for 17 years with 13 as a personal trainer. For the last 7 years, he has been the lead educator for PTs in the UKs largest commercial gym chain, as well as successfully owning his own PT business. Dean's passion is helping trainers acquire all the tools so they can get clients, train clients and keep clients. The three core skills all successful PTs need to have. In his spare time, Dean is a bit of an adrenaline junkie competing in OCRs with Europe's Toughest Mudder on the agenda for this year, plus engaging in mountain biking and rock climbing.