Morning karate. Practicing weighting legs in kosa dachi and neko-ashi dachi. It's important to have full mobility in the unweighted leg and use toboku-ho when redistributing your weight. It also happens to be a great leg workout. You get a clear sense of how absorbing weight by your main leg can propel you like a spring i.e. kusshin (屈伸).
Kata can be both exercise and insight. The key is to do it enough so that you move from exertion to meditation. It is a mistake to look for only the meditative side when you can't stand properly, when your muscles are ill-conditioned, when your breath fails you. The meditative has to grow as your physical and technical capacity grows. As Ushiro said, you must fill the buckets together.