• The first variable to control risk is deciding which futures market to trade.
• The second way traders control risk is with the number of contracts they trade.
• The third way is to set stops that are within your risk tolerances.

https://www.cmegroup.com/education/courses/master-the-trade-futures/practice-what-youve-learned/master-the-trade-defining-your-parameters-for-exiting-a-trade.html