I've seen this so many times I feel like going about this explanation starting with yelling that "this is fucking wrong", but I'll hold it in and explain why it is instead.
First off, no matter how much weight you're able to push, pull and shove, unless you take steroids you're extremely unlikely to end up looking like this:
Do you have any idea how much time this woman has spent working out, and the amount of food she's forced herself to eat - not mentioning what else she probably put in her body - to reach this size?
I mean it's not like you have anything to worry about taking 8 kg dumbbells instead of the 5 kg ones, you're still not gonna wake up tomorrow with the biggest frigging biceps ever going "oh NO i'm HUUUEG". It doesn't work that way.
Nor are you gonna get "fit" like all those models (talking non-anorectic ones) by not even breaking a sweat. It doesn't work that way either.
When you're doing an exercise you want to make progress, you want to to make one rep more than you did last time or lift some kilos heavier than last time, and with time you're going to look nothing like that woman up there, more like a fitness model of sorts:
I mean it's not like you have anything to worry about taking 8 kg dumbbells instead of the 5 kg ones, you're still not gonna wake up tomorrow with the biggest frigging biceps ever going "oh NO i'm HUUUEG". It doesn't work that way.
Nor are you gonna get "fit" like all those models (talking non-anorectic ones) by not even breaking a sweat. It doesn't work that way either.
When you're doing an exercise you want to make progress, you want to to make one rep more than you did last time or lift some kilos heavier than last time, and with time you're going to look nothing like that woman up there, more like a fitness model of sorts:
See those two? They're without a doubt strong as hell. If you think the one to the left is too big or has too much muscle then don't worry about it. Like I said it won't happen over night, she spent several 100 hours to look like that, and remember you can stop anytime you feel you're getting too "fit" ;)
And if you DO wanna look like these chicks you're gonna have to do more than run on a treadmill.
Get out there, push some limits, eat shitloads of food and feel great about yourself. Don't forget to drink water. And sleep. Don't do drugs. All that.