If you're working out, but not seeing results just yetâ?? don't despair. Your exercise routine could still be working. Business Insider spoke with fitness experts. They revealed 7 signs that show whether you're working out enough. They include: 1. If you're hitting the gym 3-4 times a week and hitting you're target heart rate for at least 30 minutes. 2. You have increased energy, feel goodâ??stress less and are sleeping well. 3. You keep a healthy lifestyle outside of the gym. This can include making healthier food choices and getting more sleep. 4. You have an appetite and Your metabolism is working well.