First stretch and drink water. Additionally, begin slowly, then work your way up to more sets and reps. Also take care if your body by filling it with nutrients. Sleep is also important with muscle growth. So to progress it is best to start of slowly , it’s best to have a coach that will guide you. Otherwise start by researching first, then slowly working your way up to harder exercises. Always stretch and relax your muscles afterward in addition. Also if you ever feel any pain or unusual sensations, contact your doctor.