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Here's a website, they have a ton of free cardio videos for at home! :)

http://www.exercisetv.tv/workout-videos/challenges...

Also, drink only water and green tea. If you don't like the taste of green tea, you can simply add one packet of truvia sweetener.

'cardio' is a stupid idea. weight loss is mostly about eating right. (more vegetables, less junk) swimming is good exercise, and does not build muscles so much as higher resistance exercises.

Skipping is a great cardio

Focus on cardio (it won't lead to bulk), and/or using weights with the goal of toning (rather than weight-bulking).

running, swimming, and cycleing