Spinning for breath

Wednesday evening 75 min moderate ride with 15 min tempos
12:00 Moderate (HR 160-182)
2:30 tempo (HR 183-189) (one down, five to go, I can to do )

8:00 Moderate (HR 160-182)
2:30 tempo (HR 183-189) (Whoa!)

8:00 Moderate (HR 160-182)
2:30 tempo (HR 183-189)(Ok, really feeling it now, must take Power Gel to go on!)

8:00 Moderate (HR 160-182)
2:30 tempo (HR 183-189) (My tummy started feeling queazy here, funny how this starts to happen a min into a 185 HR, this is not a comfortable feeling)

8:00 Moderate (HR 160-182)
2:30 tempo (HR 183-189)(OMG, visualizing spewing my powerbar and gel I had pre/during workout all over the floor. Is this for real?)

8:00 Moderate (HR 160-182)
2:30 tempo (HR 183-189)(I did it!!! Not sure how but I did!)

8:00 Moderate (HR 160-182)

Freaking A this was hard. I was good 40-45 mins into it, after that I started feeling nauseous, my tummy felt hollow and icky and I couldn't get enough air to breathe, hence anaerobic training right? I sucked down a Power Gel 40 mins in to make sure I'd last the whole 75, I was running low of calories for the day post ride. Not sure exactly how I managed to pull this off but I did. Hooray! Now I can look forward to a few days of easy L2 workouts. Hip, Hip Hooray!