Respected sir/madam,
My name is ________ (name) and I am a resident of __________ (mention location).
I would like to inform you that I am willing to get enrolled in the training session conducted by you. This is to bring to your notice that I am a fitness enthusiast and I have heard a lot about your achievements in the field of _________ (Yoga/GYM/Other). I would be more than thankful if you could help me in achieving my fitness goal.
For the same, you may reach me out at _________ (mention contact details).
Thanking you,
________ (Your name),
________ (Contact details)