beat a gym leader
You can find HM Strength south of Soleacon Town at the top of the Lost Tower. One of 2 ladies at the top gifts you with this.
You have to find the Gold Teeth in the Safari Zone and then give them to the warden in Fuchsia City, his house is next to the poke' center, after you give him the teeth he will reward you the HM
you can find the hmo4 strength at the wardens house in fushia when you give him the golden teeth in your key items that (you find the golden teeth by where you find the hmo3 surf
first you need to get the hmo4 strength in the lost tower,second you teach it to a Pokemon then go to mt.corenot and press a (the button) when you get to a bolder or rock. and keep going forward until the end
HM04 (Strength) is obtained at the top of the tower south of Soleacon town. One of the two old ladies will give it to you.
u can get strength in nimbasas city in th house beside Pokemon center
its hm
You have to find the golden teeth in the safari zone, you must then leave the safari zone and take the teeth to the house in the bottom right corner of fuchsia city and give them to the warden, in return he will give you HMO4 strength.
In Pokemon White, you get HM04-Strength in the top left building in Nimbasa City
In a building north of the Pokemon Center in Nimbasa.
you get it from a kid in nimbasa and just tech it to a strong Pokemon
make one of your pokemon learn the hm strength