In her own admission in this short video feature by ESPN with her fiancee, she admits she does 1000 situps per day

I have always known elite professional sprinters like her does plenty of core stabilizers and exercises but I don’t really know the exact number

So now we know how many situps she does per day to get that rock-hard abs. Athletes take note, but don’t go crazy and do 1000 in a go

Break it down in couple of session over the whole day