Primal1 Testo While working out, a great tip is to stretch the muscles you just worked out between sets. Stretch for around 20 to 30 seconds. Stretching in this way gets prove results. Studies demonstrate strength increases of as much as 20%. Also, stretching can prevent injury.Primal1 Testo Cycle at a steady speed. When you pedal too fast, you'll get tired too fast. Keep a good, simple pace, and you will raise your endurance and not feel so tired. Also, pedaling steadily will warn you to an injury as you will feel the pull more easily.