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.
Hold yourself back to a pace about 90 seconds or 2 minutes per mile slower than your current 10K pace. Finally, the pre-training schedule. You should be able to run this schedule for four to five weeks without much discomfort before starting the half marathon program. If not, give yourself some time to build up to that level gradually, or you may risk injury.