The exercises below build a foundation of movement. They "prep" your body by activating important stabilizing muscles that help protect you against back pain, shoulder injury, knee pain, and more. They also help improve rang of motion in your body so your are able to move through your squat, pull, or lunge with fluidity and grace. Do this routine as a warm-up to get your body in a good space to work hard or as a full workout at home.
Remember, consistency beats intensity. Exercise at a level you know you can maintain through the whole year, not a pace that makes you so sore you have a hard time sitting on the toilet the next day.