the filipino meets undefeated mayweather in a $ 300million mega-fight that has been branded ` the biggest bout in boxing history ' at the mgm grand in las vegas on may 2 .
mayweather has been sharing regular updates from his training camp across social media with the latest being a youtube video featuring his faith , singing and claims his mother uses voodoo .
mayweather uses a -200 c kriotherapy chamber to help his recovery from training .