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Photo of Jillian Michaels

Photo: 不明 / CC BY-SA 4.0 (source: Wikimedia Commons)

Jillian Michaels

ジリアン・マイケルス / じりあん・まいけるす

American personal trainer

February 18, 1974 (age 52) ・ Los Angeles, California, United States

  • California
  • personal trainer
  • talent agent
  • podcaster

My Take

Jillian Michaels earns my respect because her toughness was never an act detached from substance. The drill-sergeant persona from The Biggest Loser made her famous, but underneath it I see someone who struggled with her own body as a teenager and turned that pain into a method. She also refused to stay in one lane — trainer, author, podcaster, entrepreneur, even film director — which tells me she treats fitness as a media business as much as a gym discipline. I do not always agree with her louder opinions, but her core message of accountability has genuinely changed lives. That staying power, across decades of fitness fads, is rare.

Overview

Jillian Leigh McKarus (born February 18, 1974), known professionally as Jillian Michaels, is an American fitness trainer, nutritionist, businesswoman, media personality, and author. She is best known for her appearances on NBC series such as The Biggest Loser. She has also made an appearance on the talk show The Doctors. In 2015, she hosted and co-judged a series on Spike titled Sweat, INC.

Summary adapted from Wikipedia, licensed under CC BY-SA 4.0.

1. Profile

Name (English)
Jillian Michaels
Name (Japanese)
ジリアン・マイケルス
Reading
じりあん・まいけるす
Born
February 18, 1974 (age 52)
Zodiac / Chinese zodiac
Aquarius / Tiger
Origin
Los Angeles, California, United States
Blood type
Private
Height
159 cm
Agency
Private
Occupation
personal trainer / talent agent / podcaster / film director / entrepreneur

2. Background

Elementary school
Private
Junior high
Private
High school
Private
University
California State University, Northridge

3. Relationships

Spouse
Private
Children
Private
Parents
Private
Siblings
Private

4. Personality

Motto

Private

More people from United States →

7. About this entry

Tags

  • California
  • personal trainer
  • talent agent
  • podcaster
Last updated
2026-06-11

Facts are limited to publicly available information up to 2024; non-public items are marked "Private / Unknown". English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.