Jane, are you travelling in a car?
Wondered if you could stick a small set of weights in.
I got a set with variable weights from 1 to 3lb, so you could do a mixture of squats, lunges, bicep curls, triceps.
Also use the bed or side of bath maybe for doing dips, and chairs if you have one for standing up/ down on, one leg at a time. That's good for building the leg muscles up for running.
Then plank, sit ups, press ups.
Quite a few free programs now for smartphones will give you a virtual gym class too... One on android I've used, probably others similar.
Edited: 29/12/2011 at 15:12