How do I cope when my body is worn out from physical work?

You can maintain any turbine, and the climbs and the cold have taken their share of your body in return. Feeling that is not complaining. It is honest accounting of what the work costs, and you have earned the right to say it out loud. A body that aches from real labor is not a body that failed. It is one that showed up, year after year, in conditions most people avoid. Still, it is worth tending to now, before the wear becomes damage you cannot undo. Caring for yourself is part of the job, not separate from it. This week, take one ache seriously. Rest it, stretch it, or see someone about it. Your body carried the work this far. Start carrying it in return.