I "second" swimming- it's exhausting for DS especially if he swims laps. You might try an indoor mini trampoline so that she can bounce it out.

I have a DS7 "talker." It does drive me a bit looney after awhile. Mainly, because it distracts him from getting through important tasks. I think setting aside a small dose focused time to really "listen" means so much to these kids- and it has improved DS's need to talk constantly. Once my DS said "you don't think my ideas are important!" It made me feel terrible because I had been interrupting him and getting impatient.

I was a child with *a lot* of physical energy. Back in the day, I roamed outside almost all day during vacations. As a young adult, I took up daily running and walked two miles to and from work everyday. Now, I wish I had that energy.