Hi Joanna, I had the exact same experience as Meesh, felt sore and a bit achey for the first few days and then literally woke up in morning and the sore/stiffness had pretty much disappeared… It actually worried me (no idea why… Suppose I was just surprised that suddenly I felt fine!!).
Just take it easy / I literally did nothing for at least the first 5 days and it totally pays off! Xx