I've been reading lots of post of over training and , training age reps... e.t.c.

training to failure misconseptions:
At the end of the work out, you should only feel smashed some of the time, not all of the time!

You don't have to train to failure to grow, This relates to overtraining as well. the average guy can't train to failure and beyond (forced reps. etc.. without overtaxing his system and halting his progress in the gym.

you can train to failure but not all the time maybe once every 3 to 4 weeks .... its possible anything beyond is futile....

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as for training and age. rep selections:
The more advanced you become , the lower the number of repetitions that will give you the best response...

rules we all heard that one to four reps for strenght , and around eight to twelve reps for endurance.. these rules are pretty accurate spacific number can vary to an extent based on genetics , muscle fiber type and a few other factors...

so, if you've been training seriously training (age) the less reps you'll need for hypertrophy in other words. if you used to grow like a weed on ten to twelve reps as a beginner then your ideal typertrophy range maybe four to six reps now that you have several years of experience...

just something for you guys to ponder.....!!!!