My commute is 12.5 miles each way, mostly flat. It takes me about 1 hour each way at my current (slow) speed. I am 5' 11" and currently 259 lbs, down from a high of 273 lbs last year. I have tried to commute to work 2 - 3 times per week with varied success this past year. I have started commuting again, but find that my body gets tired if I try to do it both ways in consecutive days. Ideally, I would like to be able to ride both ways 4 days per week, and also ride on the weekends.
I usually ride at around 70% max HR, so these rides should qualify as endurance rides. Every now and then, I try to go harder for several portions of the rides, especially the short climbs I have.
Is there any way to improve recovery? Is it just a matter of time and all I have to do is persevere? I am currently riding one way on the bike and taking the train the other way, to see if I can avoid overtiring myself in order to increase the frecuency of my commute by bike.
I appreciate and advise on this subject,