Placing the base of the palm against the bar - this will look like you’re pushing down on the bar (Figure 1) - compromises the grip, and this will show up in several ways. First, if you can even break the bar off the floor, it may result in a soft lockout at the top of the lift (e.g., knees that are still bent) or the complete inability to finish the lift at all. Second, when your grip is compromised, everything else starts to compensate - your back starts to round, the weight feels heavier, and it will actually be harder to pull the bar off the floor.