Yeah, I don't have access to sparring partners, or anything like that. But thanks, I figured out that running alone is doing little help, and I should run shorter distances.
So I guess that I should run for a while, then do pushups/sit-ups/squat jumps, and then continue running. Or the same thing without the running.
Oh, well. I'll still run on long distances sometimes, though not as often. That's because it's comfortable to run when I'm going somewhere, and also it's a great way to lose fat - in case I get some fat.