Climbing and yoga for someone with mild hypermobility tendencies

When I warm up on the indoor climbing wall, climbing simple ladder-like structures, I always get a pretty intense feeling in the shoulders. I don't know if it's blood rushing to the area or if it's fascia slowly adapting to my body weight. I feel a stretch all along my side bodies. I try to hang a bit, let my body weight pull open up and warm up my side body. I can do that a bit with my back body as well, rounding my spine a bit to stretch the muscles and the fascia. I can actually simulate the feeling of stretching (not the intensity though) by simply reaching one arm above my head towards the ceiling.

I asked my boyfriend if he also got this intense feeling of stretching when he warms up on the wall, and he said no. The difference between us is that I have to warm up on very simple routes with next to no strains on my muscles; otherwise the first climb would feel extremely difficult. He on the other hand, already wants some difficulty in his warm up climb. It's like his muscles crave stress already while cold, and my muscles are not capable of fully engaging before the fascia are ready. After some stretching and warm up, then I can start to climb harder stuff -- routes that require more muscular activation.

When I practice yoga, there are a lot of moves where everyone else feel a lot: for example my boyfriend feels a lot in any asana that contains a spinal twist, whereas I barely feel anything in twists. In fact, I hate the lying down mild twists at the cool down phase of many yoga classes. I don't feel a stretching sensation at all along the body. I just feel like my vertebrae are crunched and I'm probably overstraining my connective tissues.

I was looking up hypermobility and climbing, and people describe pulley injuries in the hands. I guess I haven't reached high enough difficulty to strain my hands so much to start getting those injuries. My fingers also don't contort into the shapes that I see in the images I google online, so my hypermobility is not severe. I am also too chicken to dare to try as hard as many guys at the gym seem to do. The list below are typical characteristics for joint hypermobility syndrome (JHS), and how I match to these symptoms:

• pain and stiffness in the joints and muscles [sometimes]
• clicking joints [yes]
• joints that dislocate (come out of the correct position) easily . [luckily no]
• fatigue (extreme tiredness) [yes]
• recurrent injuries – such as sprains [luckily no]
• digestive problems – such as constipation and irritable bowel syndrome (IBS)  [sort of]
• dizziness and fainting [dizziness yes, fainting no]
• thin or stretchy skin [no.... I think]

There was another list of symptoms that JHS can cause, many of which overlap with the above list. But there are some additional symptoms that I do experience:

• back and neck pain 
• night pains [not really a pain in my case; more like soreness and erratic energy currents flowing through the muscle/fasciae that I overworked during the day's climbing session] 

The fact that I need to strengthen my muscles to protect my joint is the obvious one. Given that I haven't severely injured my body that much given my age, I am probably too careful and never push my body to its limits, which is maybe a good thing for my body. I have a tendency to want to compare myself to others, but given my body composition is so different compared to most people I know, I really shouldn't do it. Currently, my boyfriend notices novel muscular definitions on his body pretty much every week, whereas I only notice muscle tone progressions on a monthly basis. He does not get neck pains nor does he wake up in the night from soreness.

The website suggests that people with JHS should stick to low-impact exercises. Currently I don't feel like climbing is overstraining my joints. I really like how the activity improves my muscle tones. I don't love the imbalance I feel after each climbing session. I have tried doing online yoga classes on my rest days, but felt like it was not a good idea to follow a led class. Instead I should try to stretch and try different asanas on my own, be more mindful how each asana feels in the body, and back off on the asanas that really irritate the specific overworked muscle groups. It is not that easy. For example, back bends feel great after climbing, since climbing involves some haunch forward-type movements. However, urdhva dhanurasana (upward bow pose) can feel great and horrible at the same time). It provides much needed stretches for some parts of the body, but the shoulders and back muscles can feel really overworked. I probably should find some alternative backbends that can accomplish the deep stretching that I crave but not put so much strain on the back muscles.

There is also this electric current issue that is not really addressed by western physiology, not well defined by yoga teachings (in the west), and too esoteric for me to understand in Chinese energy exercise teachings. I really hope that one day I can find a teacher with minimal BS, who has sound knowledge of the body's energy system, who doesn't try to sound like he/she is superior to other people, and who doesn't try to put students down. This energy system is linked to the connective tissues, to mood, to how tired or energized I feel, to the mind, and to the physical health of the body of course.