no, that's a big mistake.

you increase the weight when you wanna pump up (have more meat)

you go for minimum weight (just enough for the resistance, say just 5kg max), and you continue lifting it till you're tired and can't lift (no "N x 10" sets)
you "endure" to tone, this way you build from inside out

ya bro... trained with personal coach last time... was doing it all wrong till coach pointed it out...

similar concept like rock-climber training.. works very quickly with endurance training

haha why leh? worked out pretty well for me last time..

now? gone case already la

i was doing it like 10 years ago... now with young kids n all, the most is treadmill n planking so that tummy won't come out so fast

but to be honest.. if you ask me whether coach qualified or not, i really dunno.. he was coaching in Uni when i was in Oz

my apology as I'm afraid my comments were not fully accurate

while lighter weight with more reps do help in toning, you DO NOT have to avoid heavier weight
there are many articles that support this but I find the following explains it very well, yet in simple terms:

Myth #1: Lifting light weights will tone your body and lifting heavy weights will bulk you up.
The Truth: I'm not sure who first pioneered this idea that heavy weights will bulk you up, but it has stuck over the years and erroneously makes many people—both men and women—afraid of lifting heavy weights. While there is some truth to the idea that lifting lighter weights for more reps does a better job of increasing the muscular endurance, lighter weights will not help you "tone" better than heavy weights. In fact, because heavier weights build the strength of your muscles (and the size to a small degree—no Hulk action here), thereby helping to increase your metabolism and burn fat, lifting heavier weights with fewer reps (8 to 12 on average) and working until you're fatigued is more effective at helping you reach your toning goals than lifting lighter weights. Not to mention that it's more time efficient, too!

Read full article here: http://www.sparkpeople.com/resource/fitnes...les.asp?id=1662