i am 36yo recovering anorexia/bulimia

a year ago i started going to gym etc and very quickly built gains in muscle my dietitian was amazed at increase in couple months (i used to competitive swim to be second in country (NZ) so maybe muscle memory!)

anyway, i had stopped the gym in about august due to many things, and in past couple months have been walking 3-6miles per day (i walk about 3.5 miles per hour i think)

my intake is the same as has been for months and months. i eat healthy mostly fruit and veg with protein etc. keep well hydrated too etc

i hadnt tried on my demon jeans for few weeks but i did yesterday they feel ALOT TIGHTER in legs.

i doubt that i would have built that much leg muscle WALKING surely???
for past four days i have walked about 5miles each day.

i am well hydrated, not had much sodium, hormone fluctutations are def not a factor so i am feeling freaked out why my legs are bigger as i was told walking doesnt increase leg muscle size?!?!?!

feel very disillusioned and although i know i cant go back to purging i wish i could

any ideas or help?

Actually, walking long distances can build leg muscle which is probably what you are experiencing. I'm sure you look great. Try to concentrate more on health and less on size and you'll be fine. Good luck to you!!

I'd guess it's a rehash to muscle memory as well. You had to have had strong legs as a competitive swimmer and walking, while probably not building new muscle, will bring back size and tone.
Do you know what your bodyfay % is? Has your waistline increased since the last fitting of the "demon" jeans?