App aims to turn back your biological clock

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Male or female, aged 21-60 years. * A BMI categorized as overweight (≥ 25) but not stage II obesity (≤ 35) * Daily steps \< 5,000. * Ownership of a smartphone device with either the Apple Health or Google Fit application. * Willingness to carry their phone in their pocket or on their person at all times to track steps during study. * Willing to download the Pro2col application and connect it with either the Apple Health or Google Fit application. * Willingness to complete physical tasks including a timed one-mile walk/run, regular or modified push-ups to exhaustion, and chair get-ups to exhaustion. * For the experimental group, subjects must be willing to follow the application protocol. * Able to read, understand, sign and date the informed consent document (English only) * Able and willing to comply with the scheduled visit(s) and study requirements. Exclusion Criteria: * Currently taking (within the past 30 days) ergogenic dietary supplements including, creatine, protein, amino acids, or stimulants other than caffeine (yohimbe, ephedrine, etc.) Currently taking performance enhancing drugs (testosterone or other anabolic-androgenic steroids), human growth hormone, insulin, etc. * History or current malignancy * Receiving chemotherapy agents or radiation treatments * Musculoskeletal disease (muscular dystrophy, arthritis, etc.) * Recent (\<3-months) musculoskeletal injuries * BMI \< 25 or \> 35 kg/m2 * Diagnosis of a terminal illness * Use of prescription medications that influence body composition (i.e., prescription hormone therapies, etc.) * History of alcohol abuse * History or current drug abuse * History or current diagnosis of depression. * History or current diagnosis of suicidal thoughts/ideation. * A score of ≥ 10 arbitrary units on the PHQ-9 during baseline testing. * History or current cigarette smoke (including vaping) within the past 14 days from the screening visit * Insulin-dependent diabetes and/or metformin use * Chronic kidney or liver disease * Has significant concurrent illnesses (controlled or uncontrolled), such as diabetes, lupus, epilepsy, or cardiac disorders, hepatitis B/C, HIV, serious mental health illness such as dementia or schizophrenia; psychiatric hospitalization in the past two years, or other, which in the opinion of the investigator, such conditions might be aggravated as a result of treatment * The investigator feels that for any reason the subject is not eligible to participate in the study * History of uncontrolled cardiovascular disease (i.e., myocardial infarction, hypertension, hypercholesterolemia, peripheral vascular disease, other) * Developmental disability or cognitive impairment that would preclude adequate comprehension of the informed consent form and/or ability to follow study subject requirement and/or record the necessary study measurements * A family member of the investigator or an employee of the investigator * Participation in any other investigational study within 30 days prior to consent.