It's hard but the more you do it, the more manageable it gets. Just a tip- You go through three complete sets of exercises during the warm-up, which is then followed by a water break and a decent period of stretching (5-10 minutes). I think the fit test only goes through one set of the warm-up exercises so mentally I wasn't prepared for how long that was going to last on my first day! Good luck.

Don't be down on yourself, if only we all had the luxury of a life without demands be it work, family, etc! I take on a day-by-day basis too. Sometimes there just aren't enough hours in the day. At least we're trying!