DIY without looking at the handbook gives men a 'masculinity boost' 

Many women might roll their eyes when their partner refuses to read the instructions before starting a task.

But doing DIY or completing a project without using the handbook makes blokes feel like 'real men'.

According to a survey of 2,000 men, 38 per cent experience a masculinity boost when they complete a job around the house or garden.

A third feel like an alpha male when they don't use the instructions, and a similar proportion feel a lift when checking the car's oil, water and tyre pressure before a long journey.

Some 18 per cent responded that they feel superior when carrying three pints from the bar without spilling a drop.