Elevated resting heart rate

1. Stop worrying about it because that isn't helping

2. Does your plan have any sort of taper built in? Your logs are blank, so that doesn't help. If you truly are overtrained, a few days of lower-volume training or flat out rest might be in order. Are you new to the sport? What distance are you racing? A bit more info might help.

ETA: Not a doc and maybe a doc can shed a different light on it. But you might just be nervous, since it's a week out, on top of being tired.

I'm sure you're right. I've been trying to keep my mind off it all week, but it's hard when you can physically feel your heart pounding. (And it naturally increases more when something stressful happens at work, for example, so yes, you're right, it's partially due to stress.)

I have never done a tri before and don't have a very serious plan going. (I've been a runner for years, but had to take a swimming class just for this race, if that gives you any indication. I am also using a borrowed bike until I find out if this is really for me.)

 Because I'm used to running two or three times a week, I didn't think going out and doing 3 miles a day would be a huge strain on me. I've done a few other 5Ks and 10Ks this year, so this hasn't felt like "overtraining." Also, most of my bike and swim workouts have been focused on technique rather than endurace, since that's where I felt I needed the most improvement.

My taper plan for next week is really at the mercy of a crazy schedule (and the fact that I destroyed a wheel in a little accident last week and am waiting for a new one to come in). I was planning on keeping my volume about the same but taking the intensity down. (As in, some nice easy 3 mile jogs in the evening and making sure I get in the pool a few more times to keep my technique up and get used to a wetsuit.) My goal for this race is just to finish the swim and bike relatively strong and then keep a good pace on the run; I'm not giving myself any time goals on this one.