What are some exercises I can do at home?

I used to power walk (that used to actually raise my heart beats by an ample amount.

But now, it isn%26#039;t possible to go out because it is extremely cold outside. (This isn%26#039;t an excuse for it%26#039;s been drizzling constantly for few days now here)

I feel very helpless. and sad. What can I do to burn those calories at home and up my heart rate?

I don%26#039;t have a treadmill and because of large breastsize jumping rope isn%26#039;t a good option for me.

I do have a stair stepper at home, but I%26#039;ve heard it%26#039;s not good for knees, is that a myth?

What should I do?

What sort of exercises can I do at home to burn calories?

How long should I do the stepper (if at all I should do that) in order to compensate for the fact that I don%26#039;t power walk these days?

please help, I have a lot more weight to lose, I can%26#039;t stop here. please help. thank you.

ps: I want to do cardio at home, or anything that raises heartbeat rate.

What are some exercises I can do at home?

Jump roping is a great cardio workout..or you can dance and jump around for 45 minutes lol. But I would suggest jump roping because it really helped me get in shape and lose weight