Warm Up Exercises as a Form of Mental Preparation. When you give your body 5 to 10 minutes of a good warm up, through walking or jogging in place for example, you gradually increase blood circulation throughout your muscles, tendons and ligaments.This is much like oiling a squeaky wheel. good warm up will gradually increase your heart rate, increase circulation to your muscles, tendons and ligaments, and mentally prepare you for your workout. Although warm ups and stretching generally occur in the beginning of a workout session, they are two different concepts.