you need to get the gold teeth, which is in the Safari Zone in area 3. After you get the teeth, take it to the warden, which is to the right of the Pokemon center. Give it to him and he will give you HM04, "strength."
in the safari z ou will find old warrens teeth in that city find his house and he will give the hm to you
use strength find wardens teeth in safari zone
Strength, but Mew is not under it! You will find a Lava Cookie, though.
Go to the safari then find this fake teeth thing, then go to wardens house and give it to him then he will give you hm strength
To earn strength in Pokemon Fire Red it is said that one must find the Warden's Lost Gold Teeth in the Safari Zone. This area should not be skipped or you'll miss out on the strength.
Strength is not a TM. To obtain Strength you need to find the Teeth in the Safari Zone and return them to the Warden he will give you Strength as a reward. (I would also pick Surf up whilst your in proximity to the teeth)
You can use the move strength in Pokémon to move boulders. You can use strength in FireRed after getting the rainbow badge.
rocksmash strength and surf
You need to learn the HM strength.
Use the HM move Strength.
The Safari warden in Fuschia City will give it to you after you find his Gold Teeth in the Safari Zone.
You cant find it in Firered only leafgreen.