• Can walk up and down steps without pain or discomfort • Have good stamina • Not afraid of heights • Seniors with weaker joints and less agility • Cane, walking frame or crutches users • Parents with prams and small children or pregnant • Holding heavy items e.g., bike • Wheelchair users • Have trouble with balance e.g., inner ear or muscular conditions • Have a heart or lung condition • Acrophobic (fear of heights) 10