When does 'Week 1' start/end?
As I understand it, Week 1 just started, but the whole program ends on May 22. Once you start week 1, you technically have the rest of the time to finish it, it doesn't lock out until 22nd. You could wait til the last couple of days and do all four weeks consecutively. If you've already completed week one, you do have to wait for week 2 to open.