Energy Availability (EA)
Low EA — RED-S Risk
< 30
Low EA
RED-S risk zone
30–45
Sub-optimal
Functional impairment possible
≥ 45
Optimal
Supports health & performance
Formula: EA = (Dietary Energy − Exercise EE) / FFM. FFM can be estimated via DXA, BIA, or skinfolds. Use consistent measurement method for serial monitoring.
Your Quiet Helper at the Bedside