Do you exercise? (On purpose?)

Do you exercise?

For years, I've just biked and walked around town, but now that I'm 35 with two babies, it's not cutting it anymore. I feel creaky and achy, and my back always hurts. (It takes me like 30 seconds to straighten my back after standing up, no joke.) I'd love to get more toned and flexible and maybe take an exercise class. So, I'd really like to know: What kind of exercise do you do?

My history of exercise:

Childhood: Running around.

Teenage years: Daily ballet classes. Riding my mom's NordiTrack in our foyer.

College: Tae Bo on VHS with my roommates. (It was actually kind of amazing.)

One summer in my early twenties: WALKING on the treadmill at the gym every night while watching Felicity reruns. (Team Ben, btw.)

One day in my late twenties: I took a yoga class and was so inflexible that I felt embarrassed and didn't go back.

Twenties, early thirties: Biking and walking everywhere and hoping it adds up to a decent amount. Taking stairs instead of elevators (see: phobia).

So, now that I'm an old lady, I need to bolster my routine. When Jessie raved about SoulCycle yesterday, I was really intrigued. I'm also wondering if I should give yoga another chance? Or pilates, Pure Barre, Zumba? Brazilian Butt Lift?! I would LOVE to hear what you do! Please send any and all suggestions my way :) Thank you so much!

P.S. Seeing movies alone, and riding bikes with babies.

(Photos: International pupils at an outdoor physical education class at the English-Scandinavian Summer School by William Vanderson. Aerobics class at the Helena Rubinstein Salon, 1958, by Inge Morath)