1. Modal verbs: The use of "can" in "stress can actually be helpful" and "can motivate people" shows ability or possibility, which is a common and natural way to express effects or results in spoken English.
2. Present simple tense: Most of the answer is in the present simple tense (e.g., "stress is bad," "it helps them stay alert"), which is appropriate for talking about general truths or facts.
3. Conditional structure: The phrase "when they're under a bit of pressure" uses a present simple conditional to describe a situation and its effect, which adds complexity and clarity.
4. Parallel structure: The answer uses parallel verbs ("motivate," "meet," "helps") to list the positive effects of stress, making the answer more organized and fluent.