I started just after new year having not exercised in over 10 years. Wk 1&2 were hard work, but doable and I felt really pleased. Wk 3 however has been really hard and I am in my 3rd week and it isn't getting any easier, in fact my run yesterday was possibly the hardest yet.
I've got a lot of weight to lose and am doing WW, so that's not going to help but I guess I thought it would be getting a bit easier by now...
Any tips and reassurance would be gratefully received.