Not working out this weekend would be so easy. It's too cold to run outside. Netflix just added some new movies. Classes are expensive. Well, sorry to ruin your lazy weekend inside, but it turns out, there are a few awesome — and 100 percent free — workouts happening this weekend that sound too fun to miss. Plus, they're all inside. Get all the details here:

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Be Fit at Home
March 3, 6:30 p.m.
Williamsbridge Oval Recreation Center in Williamsbridge Oval
3225 Reservoir Oval East, Bronx

As part of a "Who Runs The World? GIRLS" wellbeing series, tonight the event organizers are hosting a seminar teaching attendees ways to workout at home using stuff with zero equipment. Even if you live in a teeny tiny walkup, you'll be able to go home and do the workout moves they'll be teaching.


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Cardio & Body Strengthening
March 4, 11 a.m.
Audubon Center at the Boathouse in Prospect Park, Brooklyn

This one-hour workout will get your heart rate up and work your whole body. Bonus: upbeat music will be playing during the whole class to keep you from getting bored, if cardio isn't your thing.

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Sweaty Saturday at Lululemon
March 5, 9 a.m.
Lululemon Athletica
408 W. 14th St.

Lululemon's lifestyle attire is a little pricey, but they offer complimentary yoga classes every Saturday whether you shop there or not. Start your Saturday off with an all-levels yoga class.

Follow Emily on Twitter: @EmLaurence