xFreya:
I only weigh 230lbs but I'm really lazy and stay in bed for 90% of the day, so when I have to move around I get out of breath really quick xD
Sounds like me lol. I'm recovering from surgery right now and began that and my weight, an up and down the stairs trip has me open mouthed breathing.
Remember to ambulate! Don't get cramps and blood clots.