too high, which could cause negative side effects. What are the main benefits of Strength Muscles? Keto ultra is basically a supplement to acquire youth. Its main benefits are increased definition in the body (greater musculature, especially if you play sports), fat loss and increased sexual performance. Additionally, you will be able to recover part of your youth with more energy and endurance to perform your daily tasks. Is ProTestosterone safe? Yes, they are not steroids and do not contain the testosterone .