RTS was founded in 1989 by Tom Purvis when he began his involvement as a founding instructor of NASM - the world's first international Personal Training Certification. He was soon joined by Dr Mark Slavin, NASM's first International Director, who spent the next 30 years becoming the world's most prolific exercise lecturer, delivering courses in over 72 countries. RTS Mastery has since evolved from a 4-hr lecture to a 200hr online + 9-day live course. To keep RTS accessible internationally, RTS Global delivers foundational courses locally in various markets.