Resistance training will bulk me up.  

The metal dumbbell and weights.

I cannot count the number of times I have read or been told this in my 50 years of life.  This statement has to be one of the most outrageous myths I have ever heard.  Women seem to believe that lifting weights or performing resistance training will make them thicker.  

So let me debunk this myth now.  If you watch what you eat and lift weights with cardiovascular exercise, you will lose fat and thin your waistline.  Sure eventually, you might ass mass to your arms and legs, but will be muscle.  You will thin your waist.  If you do not want big arms and legs, go with high rep and low weight.  You will see over time a thining process.   The process of building muscles takes energy and you will require more energy to a maintain the new muscle mass.  You have to consume higher amounts of protein and calories and thus, it will take more calories to gain weight in the future.   

The bottom line: Weight or resistance training reduces body fat, thus it thins your waistline.