If they're overweight, they can ask about their diet and exercise patterns.

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In my case, changes to my exercise patterns have much less impact on my sugar levels than how much I eat.

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"It is possible that offspring 'inherit' lifestyles that predispose them to gain weight by adopting similar earting habits and exercise patterns to those of their parents, " they say.

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Having a baby causes a host of changes to a mother's life and lifestyle that can influence her eating patterns, exercise habits, and work-family balance, says Truls Ostbye, M.

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Unlike almost all competitive products that use only one sensor to 'read' the body, BodyMedia's monitors incorporate temperature, heat flux, galvanic skin response and 3-axis accelerometer sensors to get accurate measurements of calorie burn, exercise intensity and sleep patterns that affect weight as well as health.

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He said fatigue was not fully understood and other factors such as exercise, diet and sleep patterns played a role.

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The San Francisco-based company makes the Fitbit Ultra, which monitors exercise and activity as well as sleep patterns.

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He said this could be linked to behavioural patterns set in childhood - such as diet and how much exercise was taken.

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