Go exercise!

Depression's Behavior Changes Linked to Heart Risks - washingtonpost.com:

"The researchers found that patients with depression had a 50 percent greater risk of cardiovascular events -- 10 percent among those with depression compared to 6.7 among those without depression. When the researchers adjusted for other existing conditions and cardiac disease severity, depression was associated with a 31 percent increased risk of cardiovascular events.

Whooley and her colleagues further adjusted for certain health behaviors, including physical inactivity, and found there was no longer a significant association between depression and cardiovascular events. They calculated that physical inactivity was associated with a 44 percent greater rate of cardiovascular events"