Signs that your AEROBIC FITNESS is lagging
- You fatigue faster than you feel you should during long runs
- You feel fast in speed-interval workouts, but you fatigue after just a few intervals
- In threshold workouts, your legs seem to want to go faster than your lungs can handle
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Signs that your NEUROMUSCULAR FITNESS is lagging
- You feel sluggish in your speed workouts
- You feel weak when running uphill
- In threshold runs, your breathing is under control but your legs feel heavy
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Signs that your SPECIFIC ENDURANCE is lagging
- You have trouble sustaining your goal race pace in specific endurance workouts
- You fatigue faster than you should in specific endurance workouts
- You don't perform as well as expected during a time trial at or near your goal race pace
- You perform poorly in a tune-up race
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