Describe a person who is full of energy and enthusiasm

The person I'd like to talk about is my volleyball coach, Ms Gulchehra, who is in her early forties and leads our university team. I've known her for about three years now, since I joined the team in my first year.

She is the most energetic person I've ever met. She arrives at training before everyone else and often leaves long after us. During the practice, she is always moving, demonstrating techniques, shouting encouragement and even joining in games to show us how a play should be done. And that's after teaching her own classes in the morning. Outside the sport, she organises charity matches, writes a blog about women's fitness, and is currently studying for a master's degree in the evenings. I honestly don't know when she sleeps.

When I'm around her, I feel more motivated and positive. Her enthusiasm is contagious. On days when I'm tired or have had a difficult day at university, I arrive at the gym feeling flat, but within ten minutes of hearing her laughter and seeing her excitement about a new exercise, I'm inspired to give my best.

She has also changed my attitude to challenges. I used to avoid things that seemed difficult, but she keeps telling us that effort is more important than perfection. Because of her, I've begun to take on more responsibilities, such as helping to organise team events.

I admire the way she approaches life as an adventure. I only hope that I can keep half of her energy when I reach her age.