I’m 64. I have the Level 1 Marathon plan. I’m in week 5. The plan and 80-20 strategy seem to work well for me but from time-to-time I get excited and run in Zone 3 when I should be going slower.
I see the biggest benefit to 80-20 is reducing the risk of injury yet on the audible books all the explanation is on achieving superior fitness per physiological improvements.
So is strict adherence to the 80-20 split just for physiological improvement or is my risk of injury lower as well?
To further reduce my injury risk should I consider lessening reps in interval workouts by a quarter or so? Do 6 one-minute Z4’s instead of 8?
Shouldn’t there be some adjustment for old age?