The main muscle groups that may be involved are:
Neck muscles (sternocleidomastoid muscles, shoulder and neck muscles, etc.). )
Shoulder strap muscles (deltoid, trapezius, etc. )
Back muscles (latissimus dorsi, supraspinatus, teres major and teres minor, etc. )
Arm muscles (extensor digitorum, flexor digitorum, etc. )
Lumbar muscles and abdominal muscles (rectus abdominis, oblique abdominis, long spine, etc. )
So you consume a lot of physical energy during practice, so you feel very tired.
Suggestion: warm up and relax before and after practice; Try to practice in groups; It is best not to do exhaustive exercise (such as rock climbing to see how far you can climb, which is easy to accumulate fatigue and lead to sports injury). I hope I can help you! ! !