Well, I have observed myself during the week when I am by myself with the kids and when my husband's home on the weekends or we're going somewhere on Saturday. During the week I feel so bogged down, tired, kinda dizzy headed, etc. but when I'm not alone I don't have all that. When I wake up and know my husband will be there all day, I just get up and go.
So, that makes me tell myself that there probably is no real physical reason for me to feel so bad during the week. I feel those feelings and think, "egad what's wrong with me?" But if those feelings only come when I'm alone they must be situational. Why else would I feel so good on the weekends?
So, I have been trying to make myself be more active in the house. I hold back when I feel funny from doing things that need to be done! Just waiting to be more active for when I won't be alone.
When I wake up I have been trying to start the day with telling myself it will be a good day and I'll feel good. And listing out things to be happy about.
Also, I've been riding my bike as it's getting a little warmer. The next morning I can really tell a difference in energy level.
Talking on the phone with people helps. Once I was feeling all woozy headed, thinking, "well I just need to sit here a little bit." Then my mom called and by the time we hung up, that feeling was gone! So, obviously I was dwelling on it too much.
I think tv sometimes makes it worse. I just like noise around, but I think maybe the tv ends up bringing me down. Unless it's a Star Trek marathon, then you bet I'm having that on.

I would be curious to see what everyone else says. Plus, I would be curious if other people feel more icky when they are alone. And not with other people.
We watched Charlie and the Chocolate Factory and I thought to myself, "what do you think you're like those people that stay in bed all day or something???" hahaha And then when his Grandpa Joe got the good news, he just jumped out of bed and danced around. How am I like that, sitting around feeling bad when I don't have to?