Intensity:
Great
energy,
strength,
concentration,
or vehemence,
as relating
to an
activity.
Or,
how
hard
your
workout
is
Interval
training:
Measured
periods
of work
followed
by measured
periods
of rest
(i.e.,
1 minute
sprint
followed
by 2
minutes
of walking).
You
are
in charge
of the
intervals
and
how
hard
you
work
during
the
work
sets.
If you're
a beginner,
you
can
walk
at an
easy
pace
for
3 minutes
then
up the
incline
and
speed
for
one
minute
to push
yourself
past
your
comfort
zone.
Interval
training
is a
great
way
to change
your
routine,
increase
resutls
and
burn
more
calories.
Isometric
contraction:
A contraction
in which
a muscle
exerts
force
but
does
not
change
in length.
Isometric
contractions
are
common
in activities
such
as yoga
and
stretching.
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