How much spinning/cycling is TOO much?

Seajolly

I LOVE spinning and cycling and I'm thinking of training to be a spinning teacher. I was thinking I'd start spinning or cycling outdoors 4-5 days a week. I'd be doing a combination of strength training and yoga along with that. Do you think 4-5 days/week is too much or totally fine? I am just concerned about bulking up too much in the legs.

blackcoffeeandcherrypie

I've cycled pretty much every day for about 10 years now - it's my main form of transport! You don't really bulk up in the legs - once you get fit enough to move yourself around, you pretty much stop building muscle. If you look at cyclists like Bradley Wiggins, they have very defined muscles, but they still have skinny legs, lol. As far as I'm aware, endurance cardio tends not to bulk up muscles the same way as, say, lifting weights.

Seajolly

Thanks so much!