Sorry man.....please tell me you don't listen to that belly rubbin' music before you hit the gym... 
HELL No! Jay Z, Blackalicious, Common, Talib Kweli, Hi-Tek, Pharell, Drake, Kanye, Mos Def, J Dilla, Rza, Gza, Ghostface, are for the gym, before, during and after...but, after that I'm in chill mode. I'm just a chill, Slow Jamz type of person. It befits me. Then I go for the Bob Marley, then the Old Skool Cuban music, then Brazilian Bossa Nova...
But here is another Old Skool Slow Jam, The Intruders "Cowboys to Girls"
Rick James "Teardrops" (this is the shit)