Is sewing the new yoga?

Having spent several hours today measuring and cutting fabric for my last minute makes before Sunday's vintage fair, I have discovered a new form of exercise. Who needs yoga classes or those expensive wheely ab trainers when all you need to do is spread a huge piece of fabric over your living room floor and stretch out as far as you can with your trusty ruler and fabric shears.

I can honestly say I ache everywhere from the knees up. I must be getting old...