Gregory Gourdet heralded his new year with a fit physique following a rollercoaster weight loss journey.

Gourdet shared three images showing his new form on Instagram, including a jaw-dropping before-and-after photo.

The chef's health reset included a keto diet, fasting 20-24 hours, power walking a treadmill, and running.

Gourdet thanked those who helped him with hydrotherapy and physical therapy, fasting and keto, and more.

The cookbook author encouraged others to live in whatever body they feel comfortable with.

Gourdet reassured viewers to avoid comparisons because we all come in different shapes and sizes.

The "Top Chef" star's weight loss is also motivated by his Haitian restaurant opening in spring.

Gourdet battled addiction with alcohol, small-town meth, and cocaine from High School.

The 46-year-old became sober after deciding to care for his body instead of battering it.