what is the reason???

[nilesh2354]

I see many guys lifting too lightweight but still have good physique. I hve also seen some guys who lifts heavy and still have good physique. What's the reason behind. I personally go for light wt which gives sore feeling plus pump. So which is preferable heavy or light with pump? Does it depends on muscle structure an genetics?
When I go for heavy (rep range 6-8) I sometimes loose mind to muscle contact and whole set goes waste with cheating.

[clarky.]

Defo genetics it make you so sick some times when you see these ppl who do a half arsed work out once or twice a wk and you have to work your cu*n off day in day out for the same.

[AD]

light weight high reps train a particular type of muscle fiber. heavy weight strength training stimulates another type of muscle fiber. if you can develop either type really well, you can look muscular. but if you train and stimulate both, that should give you the best results.

[CMB]

^^^ yup.

I train the 15-5 rep zone, particularly focusing on the 7-12 to look my best.

[auswest]

All about using the muscle you are setting out to exhaust, too heavy and you recruit other muscles, it's about time under tension and good form ensuring you are contacting the muscle you are suppose to be, slow negatives being a huge part which so many people completely forget about, use the heaviest weight you can effectively use in the 8-15 rep range, with good form and the correct muscle recruitment

That is how I train anyways..
In saying that I vary my rep ranges alot which is also important

[nilesh2354]

All about using the muscle you are setting out to exhaust, too heavy and you recruit other muscles, it's about time under tension and good form ensuring you are contacting the muscle you are suppose to be, slow negatives being a huge part which so many people completely forget about, use the heaviest weight you can effectively use in the 8-15 rep range, with good form and the correct muscle recruitment

That is how I train anyways..
In saying that I vary my rep ranges alot which is also important

for some muscles like back and chest I can't go for full tange eg. For lat pull down I can pull the bar up to chin with gr8 feeling but beyond that it becomes very hard to pull due to less flexiblity still I'm doin stretches every day...this happnes with many muscles so shoould I do it in same manner or its bettter to drop some wt?

[auswest]

for some muscles like back and chest I can't go for full tange eg. For lat pull down I can pull the bar up to chin with gr8 feeling but beyond that it becomes very hard to pull due to less flexiblity still I'm doin stretches every day...this happnes with many muscles so shoould I do it in same manner or its bettter to drop some wt?

Make sure you are doing the exercises correctly watch plenty of youtube videos to correct and improve form, choose a weight you can complete the exercise correctly and increase the weight from there never sacrificing form for weight. If you can afford it maybe a few sessions with a "good" pt

[RipOwens]

I like to change up rep counts every once in awhile. It just feels right.

[Times Roman]

there are a variety of reasons some go lighter weight.

one has to do with tendon strength. muscularly, I can curl alot of weight. I run into problems anytime I begin to push one arm curls over 80 lbs. my tendons act up. so for me, I have to keep the weight lighter, with higher reps.

there are two main types of muscle fiber
slow and fast twitch

fast twitch is what we focus on, as it is the muscle fiber that has that burst of energy, and is anarobic (more or less). the slow twitch fiber is what I used to focus on, as a former distance runner.

within the fast twitch group, there are three sub types of muscle fiber, so lett's call them A,B and C, and the corresponding rep range that optimizes the ttissue resulting in a growth signal

A - 5 reps
B - 10 reps
C - 15 reps

So most of the guys here will do sets that hit these rep ranges, to stimulate all three sub fiber types.

hope this helps?

---Roman