One of my well trained clients Ashton is kicking it up with a very complex training progression. He is legitimately strong already, but expressed a want/need to get even stronger.
On this press movement we have integrated the use of "drag" by applying chains on both sides, of a glute-bridge, decline emphasized floor press. The importance of "drag" is that it allows for multiple loads to be dealt with across a given motion. Meaning at various points the weight will change. This is happens as a causation of the chains being elevated from the ground. Now initially the chains basically bear no weight on the bar. However a progressive increase in resistance occurs as the bar travels upwards towards lock out (full bench press/arms extended position), where the entirety of the chains can be felt.
The reason for the use of chains is because it allows the body to adapt to an "overload" throughout a given motion. This means we are trying to trigger a neuro/muscle response that safety and effectively affords the body the opportunity to adapt and push into heavier then average weight(s). Mind you this is a very simplified explanation and much more goes into its application and reasoning. BE CAREFUL ASK AND PROFESSIONAL
INITIAL WEIGHT: 225lbs
--Each side chains: 1-small 2-large
*START WEIGHT: 225lbs
*END WEIGHT: 325lbs
*EQUALS= serious stuff