Study of Testosterone and rHGH in FSHD

Inclusion Criteria: * A genetically confirmed diagnosis of FSHD (or clinical symptoms suggestive of FSHD with a first degree relative with genetically confirmed FSHD) * Hematocrit of ≤ 50% * Prostate-specific antigen ≤ 4.0 ng/ml (or ≤ 3.0 ng/ml if the participant has a first-degree relative with prostate cancer) * Fasting blood glucose \<126 mg/dl * Able to walk continuously for six minutes (cane, walker, orthoses allowed) * Able to independently administer intramuscular and subcutaneous injections (or have a family member who is capable and willing to administer these injections) Exclusion Criteria: * Diabetes * Obesity (BMI\>35 kg/m2) * Cardiovascular disease (heart failure, coronary artery disease, uncontrolled hypertension, untreated hypercholesterolemia) * Untreated thyroid disease * Deep vein thrombosis * Untreated severe sleep apnea * Past pituitary disease * Significant musculoskeletal injury and/or pain that affects walking * A systolic blood pressure over 160 or a diastolic pressure over 100 * Plans to dramatically change exercise habits * Liver disease * Renal disease * Cancer (other than basal cell skin cancer) * Plans to conceive * Heavy alcohol use (greater than 50g/day) * Current testosterone or HGH use * Current use of medications that interfere with the growth hormone or gonadal endocrine axis.