Training day vs rest day macros — do they really need to differ?
Training-day and rest-day macro targets can differ, but the useful question is whether that split improves adherence, training support and the weekly energy plan.
When the split helps
Some athletes prefer to place more carbohydrate around harder training days, but the benefit depends on total intake, training demand and preference. There is no universal deficit or weekly-frequency threshold that guarantees an advantage.
When it backfires
A large unplanned drop in rest-day intake can reduce weekly energy and carbohydrate availability. Evaluate the split against the weekly calorie target, training demand and observed recovery rather than assuming lower rest-day intake is automatically better.
How AJYX can represent it
AJYX can track calories and macros alongside training context. Whether targets should differ between training and rest days is an individual planning choice, not an automatic physiological requirement.
Evidence and practical limit
Nutrient timing can be useful around training, but total daily and weekly intake remains the primary planning context. Position stand: https://pubmed.ncbi.nlm.nih.gov/28919842/
Use /tools/macro-calculator for a starting estimate. Different training- and rest-day targets are optional planning choices, not a universal physiological requirement.