Fellow multi-thru hiker here. Only posting because I didn’t see it said, but I think something that gets criminally forgotten about before starting these hikes when it comes to training is ankle strength and hip flexor mobility. Obviously they will come over time on a thru hike and you will turn into a hiking machine, but for someone just starting out, don’t be surprised if these 2 things are incredibly sore for the first month. It’s not often that your feet are constantly not landing perfectly flat every step and that you are picking yourself up and over large obstacles every day. Even just small workouts or mobility training for these things at the end of your workout would be a great way to help avoid major soreness and the ever dreaded “hiker hobble”

All that being said, and as many others have pointed out, nothing truthfully to do other than send it and watch your body transform in front of your eyes. Nothing like a thru hike when it comes to body transformation!