Couple questions about heart rate training; I'm brand new to the heart rate thing, since I just got my Garmin 305 about 3 weeks ago. So far I've just been recording data to see what it looks like, for the most part.
I've discovered that my resting heart rate in the morning is between 54-57 bpm, and my max is around 208. Apparently it's weird that my max is that high and none of the standard heart rate zone stuff matches up with me (the standard calculators say my max should be 193). I used
this guide to create a little chart that says which zones are what based on my max/resting. Chart looks like this:
Zone 2, 60-70% of max (148-163 beats/min)
Zone 3, 70-80% of max (163-178 beats/min)
Zone 4, 80-90% of max (178-193 beats/min)
Zone 5, 90-100% of max (193-208 beats/min)
It looks like on most of my runs when I'm not paying attention to heartrate, I'm running around 185-194 beats/min so mostly zone 4. Speed workouts put me in the upper 190s/lower 200s, sometimes up to 208 but not very often (usually up to about 203-204).
So here's my question: Sources I've read keep saying that easy and long runs should be at 65-75% of your max. Two weeks ago I did a 9 mile run while trying to keep my HR under 170, and it was the hardest workout I've ever had. I think I was using different muscles trying to run that slow, my feet got beat up from my shoes... I didn't feel like I was exerting myself that much, but my muscles sure did. My muscles were killing me. KILLING. Is that really how a long run is supposed to be??? I've been running for almost 2 years with long runs and stuff and I've never done them that slow and they don't feel that way normally. Why on earth is it that much work to keep my heart rate low? Does that mean I'm hideously out of shape, or am I doing something wrong or something?
I have to run 11 miles tomorrow and I'd like to be doing this right so I'm actually getting something out of the training... advice? I've still been doing kind of a sloppy job with my other runs, so i suppose I should start making sure my tempo runs are in the right zone(s) as well.
Training for a half marathon, btw.
ETA: sorry about the formatting fail.