Enjoy your ride of course. Once a week I go out on a spin ride of about 20 miles. I spin above 90 the complete ride & most of the ride 95 or higher. Now I'm comfortable above 100, I climb better & ride faster. I ride with a group who has a 65 yr old who spins above 90 & heart rate above 150 quite often. Try spinning above 90 sometime & do like I do, stay in the small ring most of the time & it will make you more efficient & you'll enjoy your ride even more, have fun.