definitely laziness
laziness is not a factor in efficiency.
Sunscreen helps because it blocks the sun from your skin
Diet and exercise as well as maintaing the motivation to keep loosing weight.
Pedometers monitor the number of steps taken in a day
The use of a pedometer has been shown to increase physical activity among sedentary populations
They can influence you bad or good... sometimes they may tell u things like buying there product will make u stronger or healthier when its actually hurting u just so they can get rich.... or a good way is when they tell u healthy ways to get healthy