Here's a 30 minute full body weight training video focused on the back and glutes. You will need a set of medium weights for upper body (8-12lb set) and a heavy dumbbell (30-60lb). If you are using a heavy kettlebell instead then you will also need a heavy dumbbell (30-60lb) for glute bridges. You can modify this weight according to your level of experience and can increase it as you become stronger! Feel free to repeat this video 2x for a full hour of weight training.