How do i contact a d1 trainer? CALL OUR TRAINING EXPERTS. Call (972) 395-5764 Do not fill this form out if you're a solicitor. This field is for validation purposes and should be left unchanged. D1 provides athletic-based training programs in a high-energy environment for youth and adults regardless of fitness level.What does d1 offer? We also offer 1-on-1 training, large group training, family workouts, semi-private training, and so much more. At D1, we define “athlete” as anyone dedicated to their sport or fitness. All you need to do is show up and bring your dedication—we’ll provide the rest. Try us out for free today!Why train at a d1 facility? Find Your D1 Facility “I’m kind of envious of the kids today that have the opportunity to train at a place like this and see the kind of coaching –because it can make you quicker, stronger, faster and a better athlete.” - Peyton Manning