If you mean cold air intake or cold air induction (CAI), the answer is no. A cold air intake system is simply a more free flowing air intake. The intake tubing is less restrictive, and often draws air in away from engine heat, hence the name cold air intake. This could be lower in the engine compartment by the fenderwall usually. A cold air intake will ultimately make the engine run slightly cooler. A cooler engine is less destructive to the various components. So CAI will not shorten the life of your engine when properly researched, installed and used.
Some mild upgrades can actually lengthen the life. It's the major upgrades that can shorten the life.
Oversizing the capacitor can shorten motor life.
If AF refers to Atrial fibrillation, yes, it can shorten your life.
Most cases produce symptoms but do not shorten life expectancy.
it can shorten your life span because i am 16 and the specialist told me that i could die in my 30s because of it
No.
Most likely
Turning something on and off shortens the life of one or more components in any circuit. In the case of a motor the start current is increased over run current so that every time you start the motor that start up current is imposed on the motor. Over time the higher current can melt the covering of the motor winding or weaken the structure of parts carrying the current. The quality f the individual parts will determine how much the life of the motor is reduced. There are also mechanical affects that may shorten life like the contact between rotor and stator.
Personally I would not, as the cold water could thermo-shock the heater. And if you have a glass-lined tank, it will crack it and shorten the life of the tank. I would follow the manufacturer's instructions.
factors affecting product life cycle
Yes if too much it can shorten your life
No, a magnet will not affect a battery.