I agree with Karin that “some exercise is definitely better than no exercise.” I think that what this particular question was getting at is a slightly different question though (Nicole, please correct me if I’m wrong). I see the question as related more to the person who goes to the gym day after day, week after week, exercises regularly yet wonders why they do not see any ‘results’ (whatever their measure of results may be – e.g. reduce body fat, improve their cardiovascular conditioning etc.). While it’s true that some exercise is better than none, I know people who exercise regularly but because it’s at such a low intensity that their body no longer perceives them as working out – they see no results (my friend is an example who has a large amount of body fat despite the fact that she has been getting up at 500a.m. EVERYDAY for the past several years to walk with a neighbor, yet has seen no noticeable change (I understand that nutrition plays a HUGE role in this as well).
Since the question posed here is really related to exercise intensity, not, whether some exercise is better than no exercise, (I think that most fitness professionals would answer ‘yes’ if posed with that question). Given the dichotomy of choosing an intensity that allows one to read (AND I assume comprehend what they’re reading) versus exercising when not distracted. by reading – I think that most of us would agree that a person would get a ‘harder’ workout (the word used by the questioner) without the distraction of reading and comprehending.
I hope that this clarifies why I answered Nicole’s question as I did since this is how I interpreted her question.