Actually, based on your reply I started looking into overtraining symptoms and I really believe that’s what’s happening.
I’ve been a weightlifter for about 15 years. I’m 37 now, and I just started running. But I’m running 3 days a week and my lifting 3 days a week. I started having sleep issues and then heart palpitations 2 months ago. I thought it was stress and so did my doctor, but I thought it was weird because I didn’t feel stressed at all. Now that I think of it, the symptoms started as I was heavy into my running program.
I took a week off completely, and my stats and body felt more normal. Now, 4 days back, they are starting again. I think that’s pretty obvious what’s happening.
It sucks because training is literally a part of my life. I guess I’ll have to cut back weightlifting for now since I’m focusing on becoming a better runner.