Should I run or lift first?

As mentioned in the section above, it depends on the overall goal of your workout program. Generally, it’s best to run after strength training.

Is 20 minutes of cardio after weights enough?

Yes, 20-30 minutes of cardio exercise after weight lifting is generally considered sufficient. If you prefer longer cardio sessions, you may want to separate them from strength training days. This is important as extended, intense cardio after strength training may lead to energy depletion and hinder muscle growth if your caloric requirements aren’t met.

Is it better to work out in the morning or at night?

Neither option is inherently better. Choose the option that you prefer most and that fits seamlessly in your lifestyle/schedule. The most important thing is that you work out, not the time of day that you exercise.

Is it OK to work out on an empty stomach?

Yes, you can exercise on an empty stomach, particularly if you’re engaging in light workouts. However, as a beginner, you should eat a light meal before you train to see how your body reacts. Also, exercising while hungry may negatively affect your performance in moderate and high-intensity exercises.