Abstract: The invention relates to a backpack accessory, which can be used in mountaineering, tourism, trips, hikes, various trainings, or while gardening. It could also be used in sports such as: running, sports walking, and while carrying school supplies, etc., and more. The invention includes a backpack improvement containing strap-holders attached to the shoulder straps of a backpack. The strap-holders include a strap attached to the shoulder strap at a one end and a holding-part, embodied in a grip or handle, to be held by a user at the other end. As an alternative, a set of detachable straps can be attached to a user's pants or belt, while the hands will provide tension on the strap-holders.

Abstract: A portable device which utilizes a method for tracking consumption of food calories, carbohydrates, fats, or proteins using a cell phone, personal data assistant, or hand held device. The user can record food intake; calculate basal metabolic rate; daily caloric needs; monitor calories, carbohydrates, protein or fats; and provide current metabolic state with corresponding exercise for weight control. The user can enter a timed physical activity to determine caloric balance between calories eaten and calories burned.