Simplify the following text for a Grade 8 native English-speaking person.
Original: Disturbed at his son 's participation in what he considered a `` useless '' endeavor , Landis 's father tried to discourage him from racing his bike by giving him extra chores .
Simplified: Landis ' father , is a devout Mennonite , and tried to stop him from racing his bike by giving him extra chores .