Qualifying exigency leave, like leave for a serious health condition, is a FMLA-qualifying reason for which an eligible employee may use his or her entitlement for up to 12 workweeks of FMLA leave each year.
Considerations. You can change your calorie intake during training if you feel it is necessary. If you're gaining weight, try eating 200 calories less per day. Likewise, if your training is suffering and you lack energy, you're probably not eating enough, so add in an extra 200 calories each day.
Dont forget to eat immediately after your run too. Try to include something with a little protein for a post run snack. Chocolate milk is a good recovery drink. Take the next day off from running. Your miles should decrease during the last three weeks before the marathon. During the taper sore or damaged muscles will heal. If you can eat healthy and sleep well in the last three weeks you will feel great on Marathon day. Yes, in my opinion 3 weeks is plenty of time to recover from a 20 mile training run.