Some combinations of threadmill and wind direction are crazy - not only they are hard to survive, but they give you almost no calories burn. At 20 spins I heve sometimes 15000cal burned, sometimes 3500!
The example in "Conditionals and logic, AND" chapter is wrong. In part 1 and 2 the initial example will not "display lock" if user has money but not the lvl. The next "identical" code will display lock even in this case.
There should be an update this weekend!