Strength governs how strong your character is physically, how much weight they can lift, how much force is behind their punches and how hard they can swing a weapon. In general, strength makes you do more damage when you attack people with basic Taijutsu strikes, the higher your strength stat, the harder your hits. As your strength stat increases, your damage with basic strikes does as well. Some armour or weapons may have a minimum strength requirement to use.

As the name suggests, Speed is how fast you are. Speed is the measure of how fast you can run from place to place. You speed increases your ability to dodge attacks, the faster you move, the harder you are to hit. Speed is also a factor in determining whether or not your opponents can react to you. For a highly mobile character, speed is the most important stat

Unlike speed, which allows you to move faster, Reaction Time represents how quickly you can react and respond to external stimuli. Reaction time affects your character's reflexes and their ability to move their body point-to-point in order to react to movements or attacks. Reaction time is essential for characters who want to stay one step ahead in combat.

A ninja should be reasonably expected to be able to react (with reasonable cues) to an attack or other maneuver that was executed with speed of a rank/tier which is the same as or lower than the rank/tier of the ninja's reaction time. Speeds of projectiles and characters are defined by their ranks and tiers, to find the rank of speed something is travelling at, consult the jutsu or weapon you're attempting to dodge. If it matches the rank or tier (depending on whether it is an item/jutsu or a character) of your reaction time or is lower than it, and you have a reasonable IC cue, you can be expected to be able to dodge it with reasonable time to dodge. (That being said, you would need a certain tier of Perception to dodge a speedy opponent, as detailed below.) This does not mean that you can dodge every attack with a speed rank equal to or lower than your reaction time.  Reaction time only makes it possible to react, it does not make it guaranteed.

Perception is the stat that affects how well your senses work. Reaction time quickens your reflexes while Perception enhances how well you can sense things happening around you. Perception allows you to more easily see quick opponents, help see through Genjutsu and detect hidden or sneaky opponents. It also affects how well you can smell or hear things. Be warned, high perception can make it easier to break Genjutsu, but with sharpened senses the triggers will be easier to land onto you. Perception also aids in fighting multiple opponents at once, by being able to detect people through more than one sense. Some Kyujutsu weapons may have minimum perception requirements to use.

Dodging other peoples attacks through speed or reaction time is not the only way to avoid damage. The Endurance stat decreases the amount of damage you take from basic strikes of other ninja. While having a high endurance does not do much to mitigate the damage from jutsu, someone with a large amount of it can withstand long periods of physical damage because they have honed their bodies to withstand it.