I don't know much about lupus in general, but perhaps there are special excersizes that won't cause you flares?
Don't forget it doesn't have to be weights and running. It can simply be doing more housework, or going more often on walks.
I wish you a good recovery.
If you feel like quitting or are very hungry and at the end of your calories, instead of getting a snack come here and vent with a rant post.
The hardest part for me was to find things to do INSTEAD of eating or planning what to eat all the time. But thankfully it has been the funnest (funniest?) part also.
Things that I came up with: posting on forums like this one, watching documentaries on stuff that interests me, going on walks alone and think about my future and past, spending more intimate time with my boyfriend, starting my own amateur comic... and I'm still finding new stuff
If you're at a loss what to do instead of eating you can share some of your interests and perhaps people can give ideas.
It is important to find other ways to be happy/content I think