One of the Z-Teams number one assets on the fighting ground are Senzu Beans. These magical beans can take someone who is terribly beat and almost dead and give them 100% strength again and fix up all their injuries. These beans are grown and maintained by Koran and are given out rarely. Sometimes as few as 2 beans to as many as a dozen or so.

Senzu Beans Taken By Character:

Goku: 5 Senzu Beans
-Eats one as he falls from Kamis Tower towards Earth to regain his energy.
-Yajirobe gives him a bag of seven Senzusw who eats 4 of them while training.

Gohan: 1 1/2 Senzu Beans
-Goku gives him half of one after he gets whooped by Nappa
-Goku gives him one on Namek after he got whooped by Recoome
Goten and Mibi Trunks: 0 Senzu Beans

Vegeta: 5 Senzu Beans
-Goku gives him one after he got whooped by Recoome
-Krillin gives him one after Android 19 steals some of his energy
-Trunks gives him one after he gets whooped by #17 and #18
-Trunks gives him another one during the Cell Game.
-Goku gives him one in the fight against Majin Buu.

Trunks: 1 Senzu Bean
-Krillin gives Trunks one after he gets whooped by #17 and #18

Krillin: 3 1/2 Senzu Beans
-Goku gives him half of one after he is whopped by Vegeta
-Goku gives him one after he is whooped by Recoome
-Trunks gives him one after he gets nailed by Cell
-Trunks gives him another one during the cell game.

Yamcha: 2 Senzu Beans
-Gets one from Krillin after he is injured and his energy is stolen by Dr. Gero
-Trunks gives him one during the Cell Game

Tien: 3 Senzu Beans
-Krillin gives him one after he gets beat up by #17 and #18
-Goku gives him one after he tries a suicide attack on Cell
-Trunks gives him one during the Cell Game

Cell: 1 Senzu Bean
-Goku give him one to make the fight even between Cell and Gohan

Videl: 1 Senzu Bean
-Gohan gives her one after she gets nearly killed by Suppo Vich

Note: These may not be correct!