While my main form of exercise is walking, I do regularly take a fitness class at the gym once a week. The class is a weight class (bodybar). I'm finding it fun for now, and would like to go to one more class a week, but my schedule will only permit me to go two consecutive days a week. The class given on the second day is a boot-camp type like class, where we do circuits involving weights, compound moves, and cardio. I went today even though I took the bodybar class yesterday. So, in short, I worked some of the same muscle groups two days in a row.
I know that this isn't supposed to be ideal, but I was wondering why. I'm not looking to build big muscle or anything. My main goal is to tone up and burn calories. What are the main consequences of working out consecutively, with both workouts involving weights? I'm just wondering if I should continue the two classes or stick to just one a week.

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