High Repetition, Less Weight? or Less Repetition, More Weight?

In response to my post yesterday, Ruben asked a great question: to gain more muscle mass you do use high weight less reps and to get toned and ripped, you do less weight more reps?

I wanted to share my response to clarify or help you better understand the relationship between repetition, and weight size. 

I'll try for a brief answer but the truth is that it's really not that simple. For the majority of people getting "ripped" it's more a function of diet than the type of work performed. Building more and more muscle requires not just increasing the weight but eating more as well. 

The word "toned" is not deemed accurate terminology amongst professional coaches and exercise scientist, but in popular culture refers to a low level of muscular development that's visible but it's not "bulky" or bodybuilder type. So to be toned you still have to build some muscle. In either case, "tone" or "bulk" requires periodic changes in intensity, exercise selection and execution, in order to ensure ongoing adaptation and prevent accommodation or stagnation if you will. 

So low reps or high reps, you still need to up the weight on your chosen rep scheme to make progress. There is an inverse relationship between intensity and duration. All things being equal, You either work hard for a short time or work light for a long time, but you can't do both. As an example outside of lifting, take sprinting and long distance running as comparison. You can't sprint your way through a marathon, and you can't pace your way to a 100m record. Also, take a look at the difference in physic. To confuse you even more (not really but bare with me), you can get stronger and more powerful without putting on tons of muscle as athletes with weight class requirement often do. 
Still With me? So unless you have a defined goal of either getting the strongest possible, the most powerful possible, the biggest possible, or a combination of these, you're best bet is to train for strength sometimes (low reps/higher weight), muscular and short term cardio endurance other times (moderate or medium range reps/weight and sprints), and some quality mixed days with higher reps and either sprints or mid-duration cardio bouts sprinkled on top. 

Whatever your focus, it all boils down in the end to having and maintaining a nourishing and supportive diet that allows you to achieve the results you want. Understanding your particular needs and Having a clear goal are the first steps towards finding the right solution for you and educating yourself on how to achieve your goals effectively, efficiently, and safely.

Always Strong!
JC