1 This helps keep your upper back straight while having a slight arch in your lower back. 2  Slowly lift by straightening your hips and knees (not your back). Keep your back straight, and don't twist as you lift.  Hold the load as close to your body as possible, at the level of your belly button.
Definition of birthday. 1  1a : the day of a person's birthb : a day of origin. 2  2 : an anniversary of a birth her 21st birthday.
Anniversary names. Birthdays are the most common type of anniversary, when someone's birth date is commemorated each year. The actual celebration is sometimes moved for practical reasons, as in the case of an official birthday. Wedding anniversaries are also often celebrated, on the same day of the year as the wedding occurred.