His work is full of vigour.

His fighting strength is very high.

His eloquence has a great power of attraction.

This team has a high cohesion.

He has physical strength, so he can work for a long time.

His work is overflowing with life force.

His masticatory force is surprisingly strong.

Tidal force is the force that causes the tides of the Earth's oceans.

He demonstrated strong willpower to overcome the difficulty.

Even as he gets older, his virility does not diminish.