Lately I've started doing arm and core workouts to supplement the training that my legs get on the bike, and I'm really enjoying them. But there are a few things I'm not sure I quite understand, and was hoping more knowledgeable forumers could enlighten me.
I've been doing arms and core workouts every three days, and have noticed a pattern: I feel a sort of "glow" in the evening right after working out and for much of the next day. By the second rest day I feel more or less normal, and may even have a tiny bit of muscle soreness, though not much to speak of.
1. What is that "glow"? Is that (one might hope) a manifestation of the process of the muscle consuming fat? Is it my metabolism working harder? I also feel like I'm a bit warmer than normal, sort of fearless in the face of cooler fall temperatures. Why is that?
2. On the second rest day the glow is gone. Is this an indication that I could or should be working out on that day instead of waiting? Instead of working out every three days, am I ready to go to a Mon-Wed-Fri workout schedule?
3. I'm doing all sorts of core work, but my waistline isn't shrinking. Is this because I'm building up muscle? Do I really need to stop eating donuts?