A subjective feeling of tiredness or exhaustion in the body or mind; often improved by rest or sleep.
長時間の運転で強い疲労感を感じた。
I felt strong fatigue after driving for a long time.
十分な睡眠が取れないと疲労感が続く。
If you don't get enough sleep, the feeling of fatigue continues.
軽い運動で疲労感が和らぐことがある。
Light exercise can sometimes relieve a feeling of fatigue.