Yeah it's probably best for the reduction of inflammation and the weakest cells die. If you've tendon issues do triphasic training. If it's been 10 years then change your programming. Every 4th week do a deload where you only do 50% of your workouts. Workouts break down the body, and recovery must be sufficient to heal AND cause positive adaptations. Week 1 30 miles total Week 2 35m Week 3 40 Week 4 10-15 Week 5 33 Week 6 38 Week 7 43 Week 8 12-16