10 things you need to know about drafting on a bike
It works
And not just an ‘elite sportsperson’, 0.001 of a second amount of working. The difference it makes is huge: the rider drafting will expend 20-40 percent less energy.
The other more surprising benefit is that it also works for the person doing the leading too; the rider that’s drafting reduces the turbulence coming off the leader and less swirling air behind you makes you more aerodynamic.