Decades of research has shown that creatine has robust, if moderate, positive effects on physical energy, strength and muscle-building, in part by boosting ATP energy production. May be especially important for vegetarians, whose diet is likely lower in creatine.

There are a wide range of benefits to supplementing with molecular hydrogen (H2), including increased physical energy, and recovery from workouts (see additional info below). I notice a definite boost in endurance and strength when I supplement with this prior to a workout, and several friends have corroborated this.

Collagen is excellent for joint health and can thus aid in exercise recovery. I may also help build muscle, in addition to being good for health in general.

Beet juice enhancs blood flow by increasing nitric oxide and thus appears to be good for cardiovascular health (reduces blood pressure), as well as athletic performance. Beets also have a good antioxidant profile.

Great vegetarian protein powder, thought by many to be about as effective as whey protein. Given that vegan/vegetarian diets tend to be lower in protein, people with such a diet may consider supplementing with this even if they are not looking to gain muscle mass, especially if they exercise a lot. Could possibly cause bloating in some people with gut issues, so pay attention to that when adding to your diet.

Good for relieving muscle soreness from workouts (or other causes).

Wrapping these bands around your muscles (thighs and biceps) can increase the the intensity and 'burn' of exercise and has been shown to increase the hormonal benefits of exercise (e.g., increased growth hormone, leading to greater fat loss). Can be particuarly useful for people not able to handle heavy weights (e.g., due to injury).