http://www.healthyfigures.org/rapid-trim-ultra/Rapid Trim Ultra ill gain weight. Less active lives: Generated when we spend most of our lives on the TV or computer, replacing healthier physical activities like running or walking, for more lazy activities. Genetics: From hereditary conditions or assimilation of habits, where children adopt the habits of their parents. Health problems: Mainly characterized by hormonal problems or complications due to period in the case of women. Medications: It is not unusual to know cases where people tend to gain weight because of the e.