Alison Sudbury: My husband bought one of your rowing machines last year which has already been put to excellent use. I had a caesarean section 10 weeks ago and was wondering how long after this I can start to use the rowing machine and whether you have any guidelines for me to get back to my pre pregnancy fitness.Terry O'Neill: If you have had no problem with the scar such as an infection then the recommended period after a caesarean section is 2-3 months.The more important thing is what you do when you start back. With some women who have used the machine extensively before pregnancy they try to do too much too soon. Regardless of what you did before the op you still need to allow the same time for the healing process.After 10 weeks you could start back on the machine, but you need to start gently for about 15 minutes steady rowing. If there are no ill effects then you can increase this by five minutes per week.Follow this routine for 4-6 weeks and if everything is ok then you can start a more vigorous regime.