I agree with Blue Poppy---I feel very lonely too. Even if I am around people, I will still feel lonely. Also, I would be prone to breaking my usual routines, for example I will stop going to the gym, cooking, etc. My energy level would feel very low, even though I haven't done anything. But yeah, everyone is different. It's good you are staying active, honestly for me it is the best way for me to avoid from sinking deeper. I find when I am very irritable, instead of going to the gym I would go for a walk outside in the park and listen to my absolute favorite music on my iPod. I find it very relaxing.