Opening early 2027

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Treatments · Long Island, NY

Performance & Longevity Medicine,
measured in function.

At a glance

Performance medicine evaluates metabolic health, body composition, strength, mobility and recovery to guide an individualized plan for physical capacity over time. Institute of Function starts with diagnosis and rehabilitation, considering the least invasive effective option and procedures only when examination supports them. Dr. Benjamin (Ben) Klyachman, D.O., board-certified in pain medicine and physical medicine and rehabilitation, leads care at Institute of Function in Nassau County, NY, which welcomes patients from across Long Island, New York City and beyond.

Performance & Longevity Medicine is measured in function: the strength, mobility and recovery needed for the life ahead. Institute of Function opens in Nassau County in early 2027. Planned care will use medical assessment, testing and re-testing to connect metabolic health and body composition with sustainable activity, rather than promise an age-related outcome.

Medically reviewed by Dr. Ben Klyachman, D.O. · Updated October 21, 2026

Begin with a functional baseline

History and examination consider energy, activity tolerance, strength, mobility and recovery alongside medical conditions and medicines. Body composition and selected laboratory tests may clarify a supported clinical question. A baseline provides context for follow-up, not a score that guarantees future health. Existing findings are reviewed before further testing is proposed.

Metabolic health and body composition

Care may address nutrition, resistance exercise and medical contributors to changes in weight or energy. Body composition matters alongside the scale, with attention to preserving muscle and supporting activity. Prescription options are discussed only when clinically appropriate; evaluation does not guarantee a prescription or a particular change in body composition.

Explore Medical Weight Loss →

Strength, mobility and recovery

Training demands, sleep, workload and movement capacity are considered together. Rehabilitation and progressive loading are prioritized where injury or deconditioning limits participation. Generic peptide management may be discussed selectively under physician supervision, with attention to evidence, regulatory status and safety; it is not a substitute for rehabilitation or an automatic part of a plan.

Explore Recovery Peptide Program →

Testing again, adjusting thoughtfully

Follow-up compares relevant measurements with practical function and tolerability. Testing is repeated when it may change a decision rather than simply produce more data. The plan may change with training demands, medical findings or recovery needs. No improvement or extension of life is guaranteed; treatment remains individualized and grounded in the supported clinical question.

Explore Sports Medicine & Performance Recovery →

Common
questions.

This page is general information, not medical advice. Individual results vary. Medical Disclaimer

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