It's more exercise than stuffing yourself full of protein shake, lifting heavy stuff then lying on the sunbed for ten minutes!
I hate hate gyms, precisely because the mentality is that everything is a competition.
Yeah, I might fail miserably in a spinning class, but do I get views, fresh air, cake and beer in a spinning class?No! I get loads of sweaty women who spend every part of every day worrying about how many calories were in that grape they had on Christmas day and whether they have enough HRT patches left.
Not to mention that if I did take up spinning instead of cycling, my vitamin D intake would be non-existent!