I have put my feet up on an ottoman and lived to regret it. There is no support for my knees and I have arthritis in all my joints, so when I take my feet down the pain is so there. I also have a problem w/ my ankles swelling. I have to massage them every night.
I usually put my feet up on the couch in the evening. The even support is so much easier on my body. I have a hard time sitting in a chair w/o crossing my legs. I fidget terribly, due to problems w/ my back and legs. I know crossing my legs isn't good for me, but the pain from sitting straight is horrible.
I get very tired and achy, I usually try to lay flat on the couch w/ the heating pad under my back. I will stay there for maybe 20 - 30 min depending on how miserable I feel, then I will ride my bike for about 10 - 15 min. IF our weather ever calms down I will do a walk outside instead of the bike. I can't take the wind in my face, so for now I ride the bike.
Hope you feel better.
God bless. Alice.