Ice it. Ice your injury for 20 to 30 minutes every 3 to 4 hours to reduce pain and swelling. Continue this for 2 or 3 days, or until the pain is gone. Compress your leg. Use an elastic bandage around the lower leg and ankle to keep down swelling.
Finally, two terms you may run across in the future are oxidizing agent (or oxidant) and a reducing agent (reductant). An oxidizing agent causes oxidation and is reduced in the reaction. A reducing agent causes the reduction in the redox reaction. The reducing agent is oxidized in the reaction.
Reduction of Aldehydes and Ketones. The reduction process is merely the reverse of oxidation. If two hydrogens are removed during oxidation, then two hydrogens should be added during reduction. Carbonyl compounds act as the oxidizing agent and hydrogen gas in the presence of a metal catalyst is the reducing agent.