Complex sentence: While going for his degree in Physical Education on a state scholarship, he suddenly dropped out and moved to the coast for about three years; while pondering the pointlessness of his existence, he decided to join the Army.
Split into simpler sentences: While going for his degree in Physical Education on a state scholarship, he suddenly dropped out and moved to the coast for about three years. He spent time there pondering the pointlessness of his existence, when he decided to join the Army.