Last night, I had a really interesting class. The school is small and some of the students are pretty inconsistent with coming in. It's also the time of year for sickness. So I was the only student last night. It was great! I've never had one on one training before like that.
One of the conclusions we came to was that part of the reason I get tired fast is that I don't breathe right. For example, there was a long combo that I was struggling with and I was so fixated on trying to do it right and so tense that I was holding my breath through the whole set of moves. So in addition to improving fitness, I need to relax and little and breathe!
I also read somewhere years ago that you burn roughly the same calories walking as you do running if you only consider distance. So if I were to run 3 miles in 20 minutes or walk it in 60, I would end up burning similar calories, one just takes longer. So from a weight loss POV, walking is just as good as running, although this could all be hogwash since I don't even remember where I read it. Plus as you describe it as being more complicated in terms of where the calories are coming from.
We do have trainers available. I've looked into it before and they charge a pretty low fee for their services. The only downside is that the weight rooms are always packed and a lot of people complain that they spend more time waiting for a machine than actually working out. I'm sure this is dependent on time of day, though. The pool, on the other hand, has low use exactly when I like to go there during the week. They also have kickboards and other things to allow work on just the legs or arms.
I'll find something for the weekend. Plus, the heart of the rainy season is almost over. The rain cuts back in March and I'll be able to enjoy the outdoors more. As for intensifying the light college classes, I'm not sure. In some activities, yes, but in some, no. I have so far been placed with beginners with the expectation that I can help them out. For example, one day I was asked to lead the group through kata and observe and correct students doing moves incorrectly. So I spent more time slowly modeling blocks and strikes than getting a workout, which is valuable but not exactly helping me improve my fitness level. But another day was spent mostly sparring and I did get a good workout.
Always good advice! I actually would like to try running, but I think it would be wise to slim down first. Trail running really appeals to me. But for now, the two physical activities that I really enjoy are karate (of course) and swimming. I also like cycling (on a real bicycle), but I have a wrist and hand problem when riding too long. I bought special gloves to keep my hands from going numb, but my wrists get very sore from the weight on them. Part of this is probably my bike setup - I might trying raising my handlebars.