There are various complex formulas that are used to determine how much experience 1 zeal gives, and it differes depending on which skill you want to train.
There are free calculators online that can help you without doing the math. Alternatively you could also cash in a single zeal as a test to see the experience given.
You spend Zeal at soul wars by Trading Nomad near the Soul Wars bank.
Simple: You will get zeal no matter who wins, but if you lose you will get less zeal than if you win.
Zeal points are a kind of money, which you earn in the Soul Wars minigame, and which you can spend to get experience, charms, or slayer pets.
You can use it in the game Runescape for exp in a certain melee skill. Either of choice from exp to items. Soul wars etc.
You can buy it for 40 Zeal points in Soul Wars. A stuffed or un-stuffed basilisk head is needed to buy one. It eats eyes of newt. It does not grow into an adult version.
Soul Wars is a mini game, rewards include exp in Attack, Strength, Defence, Constitution, Range, Magic, Prayer and Slayer. You can also purchase charms, pets or spend your reward zeal on a gamble.
water fiend r best blue charms roachs for crim zammy warriors for gold and w/e u like for green
kill green dragons and get 50k an inventory. its the best way possible!!! =) Correction... if you beat the fremnik quests which actually are very easy you can kill yaks. Yaks give you 300exp per yak and plus they are only level 20 something. if you don't feel like doing quests then do soul wars. in soul wars if you can keep your bar on the right side in the green for the whole battle you can get a zeal if you lose but if you win you get two. each zeal gives you 5000 exp if your defence is 70 or higher. if your defence is 90 or higher you get 7000 exp.
A Cockatrice head is a rare drop from a Cockatrice. When obtained, it can be stuffed by the Taxidermist in Canifis which costs 2,000 coins. It can then be mounted in the Skill Hall of a Player-owned house, or can be exchanged for 25 zeal points at the Soul Wars minigame for a minitrice pet. A Ring of wealth will increase your chances of this drop.
A Creeping hand is a pet players can purchase for 5 Zeal in Soul Wars.Players need a stuffed or unstuffed Crawling hand to buy one. It eats leather gloves.
Gold charms are obtained mainly from monster drops and are deemed by many as the most common charm obtainable. Many monsters drop them although hellhounds and firegiants drop them the most frequent. Less conventional ways to obtain charms are either by thieving them from Dorg-esh Kaan chests or by trading in zeal points for them at the Soul Wars minigame.
Level 4, provided you don't level up other combat skills; it is possible through any activity that grants Constitution experience while not requiring you to fight or otherwise participate in such a way to gain experience in other combat skills - example, Void Knights' Outpost or Soul Wars Zeal.