Strength Exercises Without Equipment

exercises
(exercise) exert: put to use; "exert one's power or influence"
(exercise) practice: carry out or practice; as of jobs and professions; "practice law"
(exercise) use: the act of using; "he warned against the use of narcotic drugs"; "skilled in the utilization of computers"
Exert (part of the body) to promote or improve muscular strength
Engage in physical activity to sustain or improve health and fitness; take exercise
Use or apply (a faculty, right, or process)

equipment
The process of supplying someone or something with such necessary items
Mental resources
The act of equipping, or the state of being equipped, as for a voyage or expedition; Whatever is used in equipping; necessaries for an expedition or voyage; the collective designation for the articles comprising an outfit; equipage; as, a railroad equipment (locomotives, cars, etc.
The necessary items for a particular purpose
an instrumentality needed for an undertaking or to perform a service
A tool is a device that can be used to produce or achieve something, but that is not consumed in the process. Colloquially a tool can also be a procedure or process used for a specific purpose.

strength
Physical power and energy
The emotional or mental qualities necessary in dealing with situations or events that are distressing or difficult
The quality or state of being strong, in particular
military capability: capability in terms of personnel and materiel that affect the capacity to fight a war; "we faced an army of great strength"; "politicians have neglected our military posture"
the property of being physically or mentally strong; "fatigue sapped his strength"
force: physical energy or intensity; "he hit with all the force he could muster"; "it was destroyed by the strength of the gale"; "a government has not the vitality and forcefulness of a living man"