Too many runners run too fast too much of the time. I have always said that approximately 80-90% of your running should be at a comfortable ‘talking pace’. That pace is, of course, different for everyone. If you are struggling to breathe on recovery runs, you are going too fast. There is no reason to push so hard – your muscles need to recover and allow themselves to repair after hard workouts and races. Plus, we are not all Olympians – just because they are genetically strong enough to be able to handle a particular set of workouts does not mean we all can.