Earlier quoted context omitted.
I have found that I am dead in the morning after a really hard day of rock climbing. Maybe it is because I am usually sore all over my body.
Climbing is different from typical gym workouts. It puts far more stress on your tendons than your muscles, and tends to exert injurious forces on your muscles when it does work on them. Tendons take longer to heal than muscles. Plus, most climbers have a series of rapid warm-up and cool-down cycles -- climb, stop, belay, climb, stop, etc. -- which doesn't get the heart rate going the same way that an extended aerobi…
The soreness I get after climbing is the same kind of soreness I used to get during the first two weeks of a weight lifting routine. It is not tendon damage or severe muscle damage because it doesn't last more than a day.