When you start a new game, it sets up a schedule for you with workout routines that will eventually lower your physical stats. What exactly are you having trouble with?
I changed it without understanding how it worked and couldn't seem to fix it Your comment on the staring schedule helped me to figure out how to do it but i recommend adding a - to what stats get decreased to make it clearer
The Help widget is coming in 1.3.0-alpha3, and it's going to have a lot of info about stats and how to tweak things. I'm not doing an in-game tutorial right now since things are still changing. Sorry about the confusion.