We know that negative splitting is the most effective way to run a race, but what's the best way to actually execute this?

Is it best to have a small gap, with just a few seconds difference between each half?

Or, if there's a large negative split between the first half and last half, does this mean you started too conservatively?

Coach Michael tackles these questions and gives you all the answers you need to know when it comes to negative splitting your way to a new PR.