97% of people in the world particularly males when they go to the gym THE FIRST THING THEY DO is go for a very, very heavy weights/dumbells the first thing they will tell you is they are trying to get like a body builder [is a media thing and macho thing] there is also an ignorance in the world that the bigger the weight/dumbell the more calories you will burn...Only savvy gym goers will know that the HEAVIER weights/dumbells BUILD MUSCLE, why smaller weights like with lots of repetitions is cardio and if you have been following fitness magazines cardio is what BURNS CALORIES/WEIGHTS...

Not just that, lifting heavier weights TEARS MUSCLE which is what MAKES YOU SORE THE NEXT DAAAAYYYY AND IS WHAT MAKES YOU DREAD GOING TO THE GYM THE NEXT DAY, IS WHAT MAKES YOU HATE LIFTING WEIGHTS....So if you are lifting smaller weights YOUR MUSCLES WILL NOT TEAR...

In fact with smaller weights you could lift weights EVERY 12 HOURS FOR THE REST OF YOUR LIFE AND ENNNNJJJOOYY IT...

which one you rather, lift heavier weights and only last 2 years or lift small weights and last 20 years...

i never did lift lots of weights for a long time but when i will go to the gym i will do the same mistake i will grab the 45 and 55 pounds dumbells...[age 19-23] didnt go every week either...used to lift heavier weights when i was younger cant do it now...

ON ANOTHER NOTE:

I love medicine but this is wrong, plain wrong...there is a hospital/clinic IN EVERY COUNTY IN THE WORLD...How many counties in THE WORLD ARE THERE...10 Million maybe???? How many people are there in the medical field IN THE WORLLLLD....Yet no DOCTOR IN THE WORLDDDD has quit his job and said, i am going to start a GLOBAL/REGIONAL/NATIONAL fitness/working out/gyms CRUSADE/CAMPAIGN...NO ATHLETE IN THE WORLLLD EITHER....I AM NOT GOING TO NAMMME NAMESSS HERE...

how many millionaires doctors IN THE WORLLDD OWN A GYM FRANCHISE....

My Gosh thing reaches from HERREEE TO CHINAAAAA what China, JUPITERRR....