Too High Intensity Exercise
I came across this article about exercise and rhabdomyolysis today and I was surprised, I've heard of it being associated with exercise before, but not specifically spin class (spin class doesn't sound appealing to me though, so I might be slower on hearing about this).
I found this to be a good reminder, while some of us may have to be very careful when it comes to not overdoing things due to high risk factors, everyone has limits that shouldn't be exceeded. The problem isn't just localized injuries either, it can be much more serious for anyone.
Some great advice from the article
"While almost any intense activity can cause rhabdo, it almost always strikes people who are doing something new. That is why people should always progress from light to moderate and then vigorous intensity when doing a new exercise, said Eric Rawson, chair of the department of health, nutrition and exercise science at Messiah College in Pennsylvania."
Interestingly there's also the mention of working out with a personal trainer as being a problem. I'm really lucky that way - some of it comes down to me, I have no problem telling my personal trainer I'm not comfortable with something or even needing to backing off of a particular exercise if my body is not handling it well. She also makes that easier to do though, she's supportive with modifying things for me at any point in my workout and she's also on the lookout for signs within me that things should be taken down a few notches.
I think there are exaggerations in many of these articles too. For example, people running too long run like ultramarathons etc.... it can only be too intense when people and their boies are not made to do it otherwise there isn't a problem.
@BlindFaith
When my dad was younger, he was very physically fit and ran everyday plus played baseball every sunday. He's 75 today, and now suffers terribly from bad knees due to the impact of running and sports. I wouldn't go as far as to say that running is bad for you, but I think there are many other ways of exercising that would prevent these sort of long term conditions later in life.