Self refer to a physiotherapist interested in womens health who will show U how to lift, bend, etc.; i.e. making the bed on hands and knees.
The thighs are important as the quadriceps muscle enables the knees. SO: tighten, hold, relax - an exercise which can be done anywhere; bath, standing in a queue, in the shower, whilst sitting. 10 mins every hour ;-)
How R your VitD levels?