Arnis can assist in improving muscle tone and strength. There are varying levels of resistance offered to the muscles by the different weights of weapons used in Arnis training. These are drilled for long periods, developing muscle by isometric muscle contraction. This is similar to static holds used in resistance training. Furthermore, muscular power is needed to generate the force required for attacks with the bastons. Similarly, to defend against an attack requires strength to absorb the impact and not to lose the weapons being held.
Conventional resistance training usually limits movement to simple up/down or forward/backward types of linear movement. Since the attacks in Arnis come from different angles they can target the muscles in the ‘hard to reach’ areas. Granted, the resistance offered may not be as great. However, if used in conjunction with a regular resistance program, Arnis training may complement that training and assist in producing muscular gains.
Overall, Arnis can challenge different muscular areas of the upper body, core, and lower limbs in a singular workout.
The baston drills and sparring can exercise both agonist and antagonist muscles (flexors, extensors, adductors, abductors, inward and outward rotators). All of which are involved with the various attacks and counters employed.