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.
You take most bisphosphonates by mouth-every day, once or twice a week, or even once a month. Zoledronic acid is given intravenously (IV), usually only once each year. One form of ibandronate is also given intravenously, usually every 3 months.xperts have suggested that taking bisphosphonates for 3 to 5 years may be enough if you are at low risk of fractures. Talk to your doctor about how long you should take these medicines. If you are taking bisphosphonates, your doctor may also recommend that you take calcium and vitamin D supplements.