im thinking about lifting some weights .. maybe take some steroids 
Lifting weights sounds like a good idea if you want to target certain muscle groups.
yea, but the roids will speed up the process
You can use weighted bars, dumbbells, and weight stacks to use the force of gravity and create muscle through concentric and eccentric contraction! 
yea i guess thats true
javelin throw. Many other sports use strength training as part of their training regimen, notably: American football, baseball, basketball, football, hockey, lacrosse, mixed martial arts, rowing, rugby league, rugby union, track and field, boxing and wrestling.
History.
The genealogy of lifting can be traced back to the beginning of recorded history where humanity's fascination with physical abilities can be found among numerous ancient writings. In many prehistoric tribes, they would have a big rock they would try to lift
lifting straps) are sometimes used to assist in gripping very heavy weights. Wrist straps can be used to isolate muscle groups like in "lat pull-downs", where the trainee would primarily use the latissimus dorsi muscles of the back rather than the biceps. They are particularly useful for the "deadlift". Some lifters avoid using wrist straps to develop their grip strength, just as some go further by using thick bars. Wrist straps can allow a lifter initially to use more weight than they might be able to handle