IB Syllabus focus: 'An active lifestyle supports physical well-being. Healthy physical activity levels vary with age and sex differences, and energy balance includes energy intake, energy consumption and energy storage.'
Physical well-being depends not only on occasional exercise, but on regular movement patterns that match a person's stage of life, biological characteristics, and daily energy needs.
Active lifestyle and physical well-being
An active lifestyle is a pattern of living that includes frequent movement across the day, such as walking, active travel, work, play, sport, and recreation. It is broader than formal exercise because physical well-being is shaped by total daily movement, not just planned workouts.
Active lifestyle: A way of living that includes regular physical activity and limits long periods of inactivity.
Practice Questions
FAQ
Sedentary behavior means spending long periods in very low-energy activities such as sitting or lying down while awake.
Physical inactivity means not achieving a healthy overall level of physical activity.
A person can do one exercise session but still spend most of the day sedentary. Likewise, reducing sedentary time by standing and walking more can improve total daily movement even without organized exercise.
No. Organized sport is only one way to be active.
An active lifestyle can also come from:
walking or biking for transportation
physically active jobs or chores
recreational play
climbing stairs
short activity breaks during study or work
For many people, these smaller movement choices are the main reason total daily energy consumption increases.
Body mass alone does not determine energy needs.
Important differences include:
lean body mass
age and growth status
biological sex
occupation
total daily movement
resting metabolic rate
Two people may weigh the same but have very different energy consumption across a day, so matching intake to individual needs is more important than comparing body mass only.
Appetite is influenced by more than energy need. Sleep, stress, food environment, meal timing, and habits can all affect how hungry a person feels.
After activity, some people experience a strong rise in appetite, while others do not. This means energy intake may not automatically adjust to energy consumption. Over time, this mismatch can affect energy storage and body mass.
Adolescence combines growth, hormonal change, school demands, and changing activity habits.
This can complicate energy balance because:
energy needs may rise quickly during growth spurts
activity patterns may become irregular
appetite may fluctuate
sleep routines may worsen
sport participation may increase or decrease suddenly
Because of this, the same diet or activity pattern may not remain appropriate throughout adolescence.
