I worry about the chemicals in the pools, and have pretty much stopped swimming, except for dips in natural waters.

I do not jump, run, skip or hop! Nothing high impact for me. I will do short climbs up hills, very short.

After a year and half of Tai Chi, I have finally started to be able to remember the forms, after much work on three seconds at a time. Slow going, yes, but very enjoyable once I get them.