Not posting in the camping section as I think I'm asking more about gear/walking.
I'm thinking of going on a long walk (West highland way type distance).
I think I could keep my backpack to around 10kg.
Is it wise to train with a heavy backpack beforehand?
Pre lockdown I wore a backpack most days but today I wore one and my shoulders ache so much! Is this something that would go away if I did it more often?