The Spotter Advantage
You can't push to true failure on Bench Press alone (safety). With a partner, you can grind out those last 2 growth-producing reps safely.
The "Show Up" Factor
You might cancel on yourself. You won't cancel on your friend who is waiting in the parking lot.
Fitblues "Squads"
Don't have local friends? Join a Fitblues Squad.
- Challenges: "Team 100k Steps."
- Feed: See your squad's workouts. Give "Fist Bumps" (likes).
- Chat: Share tips and encouragement.
Conclusion
If you want to go fast, go alone. If you want to go far, go together.