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The line graph compares the proportions of gym participation in European from four age cohorts during the period, from 1990 to 2010. What is most striking is the general upswing in the percentage of gym attendance across all age brackets, albeit with varying degrees. Particularly are people within the age range of 18-24 and 25-34, which took turn to be the highest proportion over the span. Focus first on a population aged 18-24 and 25-34, both population demographics experienced a significant increase in the percentage of gym participation in all examine years. The 25-34 age cohort started off with 6%, which was the highest percentage point in first year. By 2010, the people within the age range 25-34 had dramatically increased to a half of percentage, turning to the second highest proportion behind a youngest population in this time. A similar trend was witnessed in the youngest demographics, albeit from a much lower base. By 2010, 18-24 age bracket had marginally increased to approximately 60%, becoming the highest figure after twenty years. Turning to a population aged 35-44 and 45-plus, both population groups have a similar pattern during the period. The older population began with 4%, roughly 1% higher than the oldest group. By 2010, people within the age range of 35-44 had slightly increased to 41%. Besides, the oldest population had a marginally rose to reach 22% in 2010.