I shower in less than 10:

• Heat water while I undress
• Change water to cold, wet my hair only (dyed hair is a pain, god bless it's short)
• Shampoo hair, Clear, apply conditioner
• Change water to hot again, wet rest of body
• Stop water, apply gel in body
• Hot water, rinse body
• Cold water, rinse head
• Get out.

That's like 8 mins, maybe 9 because I spend 2 with my hair, maybe 10 because I spend 2 mins wetting my body to heat it up.

Ofc, if I'm feeling cold I end up spending way longer in the wet body phase.