Burks likes boxing, and so should you: “I think boxing is particularly relevant to skiing because it has fight. It is a fight. It’s similar to skiing from top to bottom, you get tired, instead of listening to your body fight, you fight through it. It brings you past that threshold of endurance where you think you can’t go anymore.”
If you want some ideas, check out these how-to videos from James:
How to strengthen triceps.
How to get a strong core
How to get strong legs:
How to do circuit training: