Simple Weekend Upper Body Workout to Help You Build Strength and Muscle Mass. 💪 Probably you've had a long week of hardcore workout sessions building that desired muscular physique. Why not end the week stronger with this very simple yet powerful upper body workout to help balance everything–strength, agility, definition. Give it a try. Don't forget to Follow for your daily dose of interesting fitness uploads. And please Like and Share to help other fitness enthusiasts discover the video. Thank