So I injured my back and have had to take it very easy the past 3 months - limited cycling and no running, 1-2 swims/week (I'm a strong 60 min. IM swimmer). I have 18 weeks until Ironman Canada. I'm planning to start a 10-week base program next week Monday and will be off for summer break (I'm a teacher) for 8 weeks building to race day so plenty of time to get some specific long course work in. Should I train for the full and see how my body reacts or should I just completely give up the idea of the full and focus 100% attention instead on the half (same course, same day). I'm an experienced IM athlete w/ 4 Ironmans under my belt and a PB time of 10:50 and change. I'm 46 and recently PR'd at 70.3 distance (5:00) this past December so I have a solid foundation of fitness. My logical brain tells me to forget the full and just do the half and focus on staying healthy. My emotional brain tell me that I paid for the full so I may as well at least train for it, and adjust as needed. What do y'all think? My focus has shifted to a "just finish" mentality and I have no ambitions for a fast time. This could potentially be my last Ironman as my body is breaking down.