One-on-one workouts customized to your fitness level, goals, and any injury considerations, with emphasis on proper form and safety.
Remote coaching sessions via video call, ideal for busy schedules or those preferring home workouts, with ongoing motivation and check-ins.
Personalized advice on healthy eating, meal planning, and lifestyle adjustments to complement your fitness routine and boost energy.
Tailored exercises and strategies to address existing injuries, improve flexibility, and prevent future issues, often in collaboration with medical referrals.
Structured plans for weight loss, muscle toning, performance enhancement, or event preparation (e.g., weddings), with regular progress tracking.

Transform your health with personalized training and holistic wellness guidance.
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Cosmic Fitness is a premier personal training studio in Buffalo, NY, led by expert trainer Dan Sheff. We specialize in one-on-one and virtual training sessions tailored to individual goals, from weight loss and strength building to injury prevention and sustainable lifestyle changes. Our clean, well-equipped facility and compassionate approach ensure clients receive professional guidance on exercise, nutrition, and overall well-being. With a 5-star rating from 34 reviews, we're dedicated to helping you achieve lasting health transformations in a supportive environment.
Comprehensive support covering exercise, nutrition, hydration, and sustainable habits to improve overall health and energy levels.
I started working with Dan last Thanksgiving and I can say that he has helped me change my life. He is extremely knowledgeable and well read on multiple facets of exercise physiology. His personal attention, patience and dedication to my journey is exactly what I need to make long term, sustainable and healthy lifestyle choices. Dan is professional and personable with a good heart and a sense of humor to match. As far as cleanliness and sanitation go, Cosmic Fitness is simply always spotless. I can’t give 6 stars or I certainly would!!!
I started doing virtual training with Dan during the pandemic after he came highly recommended by family members. I was in dire need of motivation to get exercising back into my schedule, something I don't especially enjoy the way some do, and he was able to help with that. Dan truly cares about the well-being of his clients and goes above and beyond, checking in and making suggestions on all aspects of health. Even without having ever met in person, I feel he knows me well. I have continued our sessions even though I now feel safe going to a gym maskless, because I know I won't "quit" when working with Dan.
Dan is an amazing trainer. He worked with my crazy schedule (I’m currently a PhD student) and guided me in the right direction to help sustain my energy levels throughout the day by incorporating more water, protein shakes, and nutritional food/snacks, which was an easy modification to my daily routine. Dan also helped me reach my goal to have toned arms/back for my sisters wedding!! Training with Dan has genuinely improved my overall energy levels, health, and fitness. -Janie M.
I have been training with Dan Sheff at Cosmic Fitness for almost two years now. Regular sessions with Dan have become a "keystone habit" that has helped me lose about 25 pounds over that period. We have also worked to address flexibility issues. Dan's sessions are professional and enjoyable. He makes helpful adjustments to the workouts that meet you where you are on a given day. Facilities are well equipped and clean. I heartily endorse Dan Sheff and Cosmic Fitness.
About a year ago I developed an injury and my doctor referred me to a personal trainer for strength training. After a few months, though very happy with my other trainer and reluctant to switch, I wanted to find someone in a more convenient location. I ran across Dan Sheff completely by accident and have been working with him for about four months. Dan’s workouts are varied and challenging, and individually tailored to meet my both short and long-term goals. Because of my history, I am as interested in injury prevention as in performance training. Dan is always adamant about proper form. Before increasing the difficultly of a given exercise, he always makes sure that I haven't aggravated my injury, and that I am not developing any new ones. Additionally, he is very happy to answer questions about why a particular exercise is beneficial, what specific muscles are being targeted, and how it fits into the long-term plan. He often sends me links to articles that I may find helpful or interesting, and he put me in contact with another of his clients who has turned out to be an excellent workout partner. He provides good counsel on nutrition, and has given me many helpful suggestions on healthy cooking and eating that work with my lifestyle. He has suggestions for meals when you only have three minutes eat, as well as which oils to marinade and/or cook with when you have the time to prepare a special meal. After working with Dan for a few months, I feel healthier and stronger. Also, in a recent speed workout, I was able to run 15 seconds faster per mile than I had ever run before. I know that Dan's workouts and advice have played a big part in my improvement, and I wholeheartedly recommend him to anyone who wants to perform and feel their best.
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