Aerospace engineers design aircraft, spacecraft, satellites and missiles, according to the BLS. In addition, these engineers test prototypes to make sure that they function according to plans.
1 Try a deload every six weeks or so. 2  Most serious coaches recommend three or four weeks on, one week off to their intermediate and advanced trainees. 3  These are people competing in strength sports and pushing serious weight, so you may not have to deload quite so often.
After that, a nursing baby may want to nurse more often during a growth spurt, but will likely be breastfeeding about: 1  7 to 8 times a day by 3 to 4 months of age. 2  5 to 7 times a day by 5 to 6 months of age. 3  4 to 6 times a day between 7 and 12 months of age.