Mental Tension comes from having too much to do and not having enough
time to do it, not having a planning and priority action system in
place, and dealing with pressure deadlines and demands - which creates
feelings of overload, panic, anxiety, frustration and intensity.
Physical Tension comes from muscles tightening up because you are
sitting for hours in front of a desk/computer, or being on your feet
all day, without a break - which creates neck pain, back spasms,
headaches, chest tightness and fatigue (all of which takes your focus
away from your work and reduces your productivity).
Emotional Tension comes from bottling up your feelings and not
expressing your point of view, especially when dealing with difficult
customers, demanding clients, or negative colleagues.  Whether it be
handling a sales rejection, dealing with a confrontation, or resolving
a complaint, emotional tension leads to distraction, increase in
errors, poor decision making, emotional exhaustion, and job apathy.
Personal Tension comes from not having time for yourself (your
personal, health and social needs), and feeling like an extension of
work - always being in 'on mode'.  Not having a good balance between
work and personal life is a recipe for burn out, relationship tension,
health problems and motivational slumps.
Your stress symptoms of headaches, muscle pain, stomach upsets,
sleeplessness, anxiety, tiredness, emotional ups/downs, etc., (which
are all signs of built up tension) will keep coming back until you
stop the stress from manifesting, and building up, in the first place.
http://stressgqj.blogspot.com/#