I am going to go against conventional wisdom here. As an ex ultra runner I did loads of cardio. 4 hours 5 hours at the weekend....at least an hour a day. I did running streaks where I found I had run every single day for months without a day off. I ran a 50 km ultra and a half marathon 6 days later.
I am rarely injured, I am also older (52) menopausal woman.
That said, running ultras is generally, for those not at the front, lower intensity, with periods of walking especially uphill trails. When I was out for hours some of that would be walking, and the running slower than say 5 and 10 km training.
I have heard a lot about how bad it all is for a person, and read a lot too. In the end I decided to live my life my own way. What did it in the end was reading of an older wonam 86 years old who died the day after running the New York marathon. We all have go go sometime and that sounds OK to me.
I have stopped running and I have aches and pains coming back, I feel grotty, and I'm getting fat again. Today marks my restart. Hubby has taken our dog (who has stitches and cannot run) for a walk leaving me free to run!
Here goes