The body's mass is spread out farther from the center of rotation, which increases inertia and therefore torque. The greater torque causes the sit up to be harder.
Tubing exercises are exercises that require resistance from a stretchy band. The band is stretched and works the muscles harder than without the band because of the resistance. There is some great instruction of tubing exercises on youtube.
You cannot stretch a gas. If you extend the volume in which some gas is enclosed you are working against the difference in between the external atmospheric pressure and the internal pressure of the gas. As you increase the enclosed volume, the pressure inside there falls and you have to work harder.
In what context: harder as in metals, or harder as in difficult?
Birch is much harder.
The opposite of "easier" is "harder."
Extremely important - they get the muscles lubricated, stretched and supple for the harder activities that will follow warm up excercises, not doing them and you can end up with torn or sprained muscles, very painful.
No. Harder is an Adverb.
Try harder can be the other way to replace work harder, too.
me then you my cuchie and while i suck your kiss me harder harder and harder
more harder <><><> Neither is correct. There is hard and harder or hardest. There is no "more hard".
No Topaz is harder.