Exercise and breast-feeding

Moderate exercise isn't thought to affect breast milk volume or composition, or your baby's growth. Some research suggests that high-intensity exercise might cause lactic acid to accumulate in breast milk and produce a sour taste a baby might not like, but this is likely rare.

If vigorous exercise is a priority during the first few months of breast-feeding, consider feeding your baby before your workout or pumping before your workout and feeding your baby the pumped breast milk afterward. Alternatively, exercise first and then take a shower, express a few milliliters of breast milk and, after a half-hour or an hour, offer the breast.