So i am an old dude. I bought a trainer wahoo core to help with my overall fitness.
i have done 3 consecutive 6 week ftp builder training programs since i bought the trainer and was feeling pretty good.
Today is the first time i went outside to ride. On some good climbs the legs were great but the lungs were toast. So i must be doing something wrong in my training.
Would love to hear any suggestions on what i may change to help improve.