Have a small table by where you plan on sitting (living room?). This can hold you drinks, snacks, tissues, remotes, telephone, magazine or book etc, so that if you have a clingy baby (like ds2 who woke as soon as I even sneezed etc), everything is to hand and you don't have to stretch to find the remote to turn the tv off, answer the phone, get a drink etc.
Also a blanket on the back of the chair to cover your shoulders when you get cold.
Get friends to visit and bring lunch with them!
Eat lots of fruit and veg. A thermos mug is great for keeping your drinks hot.
Accept offers of help (but only if you want it) and direct people to the Hoover, washing the pots etc