i work out alone usually, and i only make progress on my chest if i continually go really heavy. ive taken to warming up with some moderate dumbell work, then going heavy on smith benches. how much am i hurting myself by doing this? it feels like i get a better pump from the smith, when im done with a heavy set (4-5 reps) my arms are shaking, which they dont even when i do a heavy barbell set with a spotter. any thoughts? thanks

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