Located at 5489 Snell Ave, Thunder Fitness is the right choice if you’re looking for a full-service gym. Thunder Fitness San Jose is a 24hr gym and personal training facility. But Thunder Fitness is more than a gym—it’s a community. Unlike the corporate “box gyms,” our focus is on individuals, not impersonal quotas or productivity targets. We welcome our members with enthusiasm and strive to meet them wherever they are in their fitness journey. No booking is needed to attend the activities.