Sydney Janssen

3 Years Of Experience

Services:

  • Private Personal Training
  • Online Personal Training
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About Sydney

I studied human biology and kinesiology at Colorado College and hold certifications as a personal trainer, performance enhancement specialist, and nutrition coach.

I grew up ski racing competitively, and recently completed an IRONMAN where I ranked in the top 5% of female athletes globally aged 25-29. I've also completed 5 IRONMAN 70.3 races, the New York City marathon, and have been lifting and training with several coaches for the past 15 years.

I work with clients across all fitness levels, ages, and backgrounds, including those new to training, returning from injury, managing physical limitations, and experienced athletes looking to push their performance further. My approach focuses on building strength, improving movement quality, and helping people develop consistent, sustainable routines to support their long-term health.

I’m also pursuing my Master of Science in Applied Analytics at Boston College, which allows me to take a data-driven approach to training by tracking progress, identifying trends, and making informed adjustments so each program is individualized, intentional, and effective.

Trainer at: Sydney Janssen

Certified Personal Trainer (NASM)
Certified Nutrition Coach (NASM)
Performance Specialist (NASM)
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Private Personal Training Online Personal Training Improving General Fitness
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Location

Cambridge | United States

Services

Private Personal Training Online Personal Training Improving General Fitness Muscle and Strength Gain Improving Flexibility Women's Fitness Functional and Core Training Weight Loss Endurance Training Group Training

Certifications

Certified Personal Trainer (NASM) Certified Nutrition Coach (NASM) Performance Specialist (NASM) CPR/AED

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Sydney Janssen

Cambridge, United States