Soon she was
consumed by fatigue, «After six or seven months I couldn't carry groceries, I couldn't have sex, I couldn't dance with my daughters without feeling chest pain,» says Kupetz.
She also instinctively bends her legs completing the protective space around the baby, making it impossible for another person to roll onto the baby without first coming into contact with her legs.15, 16 A breastfeeding mother who co-sleeps with her baby (and has not
consumed alcohol, illegal or sleep - inducing drugs or extreme
fatigue) also tends to be highly responsive to her baby's needs.17, 18 Studies show more frequent arousals in both mothers and babies when they co-sleep, and some researchers have suggested that this may be protective against sudden unexpected infant deaths.19 — 21 Babies are checked
by their mother and breastfeed more frequently when co-sleeping than when room - sharing.22, 23
Another example is branch chain amino acids might reduce
fatigue for prolonged exercise, but the exercise actually has to be prolonged, so doing cardio rather than weight lifting, and it has to be
consumed by untrained or lightly trained individuals.