Podcast about muscle loss as we age

I know there was a Ask a Cycling Coach podcast a year or two ago that talked about how the work we do now will benefit us as we age. I feel like part of the discussion tried to explain how ex-pro racers could take years off and with some training get back to the front of the pack quickly(due to mitochondria half life around 10 years?).
Does anyone know which podcast this was?

Did a quick search and a few of those discussion points are here:


Thanks! That’s the one!