When doing the #barbellcurl and #skullcrusher it can be easy to load too much weight on the bar and swing the weight or flare your elbows respectively.
I get so many questions from folks who have trouble getting a #pump when they #workout - most of that problem has to do with the fact that they aren't practicing strict movements during their sets.
For the #barbell #curl try to keep your upper arm glued to your side, don't swing or use your momentum to bring the bar into position. For the #skullcrusher, make sure to keep your elbows tight without flaring them outward!
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