Gyms - Short term membership

Hi all,

I'm coming to Munich for the month of May to learn German at the Goethe Institute (graduate school perk). Since everyone I talk to gleefully informs me that I'll return twice the size after consuming so many sausages and beers, I'm trying to find out whether there are any Munich gyms that might offer monthly memberships for passers-through like me. Barring that, are there safe, pretty places where I might jog? Any advice would be greatly appreciated. (Oh, and if it helps, I'll be living on Arcistrasse and taking classes on Sonnenstrasse.)

Also, is the Victualienmarkt open every day, or only on weekends? Do y'all consider it the best place for fresh food?

Thanks...

Just about everywhere is safe to jog! This ain't Chicago.
Everything is open everyday except Sunday, but there are places open on Sunday too if your desparate.
Sizewise, for only a month you will be OK. I wouldn't waste my time in a gym, you will ge plenty of exercise by exploring and talking to the locals to improve your German.