Tjalling van den Bosch (born 28 June 1958 in Achlum) or "Charlie" as he was often called, is a former competitive Dutch powerlifter, strongman, and Highland Games athlete.

[1] Tjalling studied psychology in Finland and has been training professional soccer players, speed skaters, track and field athletes and cyclists.

His mental approach is also popular with companies, which have invited him to give inspirational talks.

[2] Tjalling was founder of an organization called Pure Strength, which held events in 1987-1990.

Tjalling also loves to play a game that demands the most from his mind, Draughts, he even ranks in the top 100 in the world.