Working out and staying in shape doesn’t have to cost you an arm and a leg. If you can’t afford a gym membership, there are thousands of online sites that offer some sort of workout routine. Here are several free options that offer streaming workouts from some of the top fitness professionals in the U.S.

Free Fitness Classes Online

Fitness Blender is hosted by husband and wife team, Daniel and Kelli Seagers –both certified personal trainers. The site offers more than 300 workout videos ranging from beginner to advanced. If you only have a limited amount of time to get a workout in, you can find videos as short as five minutes, but they also have workouts as long as 90 minutes. Focus on abs, yoga, high intensity interval training, and even kettlebells. Best of all, these videos are all free.

Lionsgate’s BeFit YouTube channel includes workout routines from fitness superstars such as Jillian Michaels, Jane Fonda, and Denise Austin. The channel offers a large library of high quality workouts in which users can participate in 30 and 90-day workout programs, for example, 30-day 6-Pack Abs. Like Fitness Blender, BeFit offers beginner to advanced levels, focusing on everything from cardio to Pilates. Users can get their hands on this for free.

If you have limited space to workout, such as a dorm room or studio apartment, JessicaSmithTV is perfect for you. Smith is a certified personal trainer and group fitness instructor who works out from home using minimal space and equipment. Her site currently has about 150 videos with new episodes airing every Saturday at Noon Eastern. From five minutes to 60 minutes in length, focus on cardio, strength, and yoga-inspired workouts where you can feel as though you’re getting personal attention – albeit, from on online trainer! Smith’s workouts are also free.

SparkPeople.com are perfect for beginners and those looking to improve their lifestyle habits overall. There are more than 70 full-length workout videos, including how-to tutorials for recipes, healthy living, and cooking videos. Most routines are led by Coach Nicole Nichols, a certified fitness professional whose demeanor makes everyone feel comfortable, regardless of their level. Like the other sites, this one is free.