Cycling enthusiast Lance Armstrong, in a more productive and less cringe-inducing use of Twitter than the one we brought you earlier today, announced the birth of his son on Thursday.

Armstrong said both the baby and girlfriend Anna Hansen are doing fine and even posted a photo of the newborn. The couple has named the baby Max and there's absolutely no way the kid's using training wheels when it comes time to learn how to ride a bike.

Lance Armstrong announces birth of son on Twitter     (AP)