One nice compliment to your weight workouts, I would suggest, would be stretching or yoga type workouts.

I found that during stretching classes I become more "in tune" with my MC and better understand how my muscles respond. Additionally, the toning process related to stretching helps strengthen the joints, which benefits muscle response in general.
Hope this helps

Type of Myotonia: Thomsen's

Country: USA

Bulk--yes.

Strength--well, maybe. My arms topped out in terms of strength pretty quickly, and no amount of working out could get them stronger. No idea why. I was still stronger than most other women but not as strong as people who lifted weights as much as I did. With my legs, though, I kept getting stronger and stronger. I could squat over 300lbs on a machine, with 20 reps. I have no idea what the difference is.

Type of Myotonia: Thomsen's

Country: USA