Today, athletes use more structured interval training workouts and HIT (High-Intensity Training) to build speed and endurance. 1  This variation of interval training and speed work can be a simple or sophisticated routine, but the basics are still the same as the original fartlek training.
Annabella Avery Bella Thorne (born October 8, 1997) is an American actress and singer.
Bella Thorne reveals sheâs bisexual after sharing kissing photos with mystery girl. Actress Bella Thorn says she's bisexual. Actress Bella Thorne has some new options in her single life. The 18-year-old stunned her fans on Tuesday by revealing she's bisexual, a week after splitting from her longtime beau. Are you bisexual? a curious fan asked on Twitter.