Jessica Gilbert

Born and raised in Southern California fitness has always been a passion of mine. After taking my first class at 16, I fell in love with group fitness, I loved how engaging and encouraging the instructors were and knew it was something I wanted to do. After completing my AFAA group fitness certification and continuing to learn new formats,including surfset fitness I would love for you to enjoy taking my class as much as I love teaching! Jessica's classes are great for all levels of fitness. She knows when to push and when to modify. If you want a great full body workout with a mix between cardio and strength take one of her classes.

Delfina Gimeno

was born in Buenos Aires, Argentina. She moved by herself to the United States at the age of 19, spent her first year on the East Coast then moved to Santa Cruz, where she lived for 8 years. She now resides in Los angeles. Delfina's general focus is on functional training, Pilates, and TRX. She knows her stuff and her classes are good for all levels. She will make sure you leave feeling the burn.

Tonni Ratcliff

toni newis a Virginia native with the mindset of not only is VA for is Training! Being raised in a very athletic and fitness minded family, Tonni wants to make you part of her family, sharing and instilling the love of training and finding the inner athlete. Tonni competed in her first competitive race at the age of 5 and has continued on the athletic trek ever since. Relocating to LA in '03 with an extensive background in Cross Country and Track and Field even a three-peat Collegiate National Cross Country and Track & Field Champion; Along with running, having a heavy dance background, with Ballet being her major discipline she wanted to further and deepen her experience in overall training. With having such a vast background she continues to use and expand her comprehensive knowledge of sports conditioning and has worked with all ranges from the athletic novice to high level fitness minded individuals. This list also includes Professional Athletes in a variety of sports disciplines....even Olympic Medal winning Athletes! Her goal is to make each class visceral, tangible, sensorial and fun. With this being said, Tonni is thrilled to have developed a hybrid class just for her family at Sandbox -Tidal Turbulence. Tonni currently holds certifications in Personal and Group Training, USA Cross Country and Track & Field Coaching, TRX, SurfSet, Spin, Barre, Yoga, and High Performance Training, along with being a certified first responder. If you are looking for some motivation you need to try her classes. She constantly motivates you throughout class and takes you to places your body didn't even know existed. While her classes are more strength focused you will no doubt walk out feeling the burn and dripping sweat.


Katie Seigel

katie newis a Jersey girl who has been passionate about dance, exercise and nutrition for as long as she can remember. She started teaching dance at the age of 14 and has been teaching in some capacity ever since! While studying dance at Towson University in Maryland she worked part time at Gold’s Gym and was approached to become a Group Fitness Instructor. As a professionally trained dancer and dance instructor, it seemed fitting to get her Personal Training and Nutrition Certification. In 2004 she moved from NJ to Los Angeles on a whim, fell in love with the weather and met her husband, so never moved back. She has extensive experience teaching and training people of all age groups. Her specialties are Personal Training (Strength and Conditioning), Bootcamp, Dance, Body Pump, PiYo (High Intensity Pilates & Yoga Workout) and now Surfset! Katie is super excited to be a part of the Sandbox Fitness Team! If you want someone with high energy who is fun and engaging, her classes are for you. She keeps you constantly moving at a fast pace and you will leave class feeling amazing.

Jasmine Wilson

lila bdayHailing from Chicago, Illinois, Jasmine is a graduate of the University of Illinois at Urbana Champaign, from which she received her Bachelor of Fine Arts in Dance Education. She’s been a dance teacher and group fitness trainer for over five years and is passionate about helping people reach their healthy lifestyle goals. In addition to leading groups in Barre, Indoor Cycling, HIIT Bootcamps, and Fusion Dance Cardio, Jasmine is also a fitness lifestyle blogger. She uses her blog to inspire and empower people to overcome their fears and weakness in order to live in their purpose. Jasmine uses her dance background to inspire all of her workouts, mixing the traditional with the unconventional. She is excited to bring her dance powered workouts to Sandbox Fitness!

Jaclyn Winter

jaclyn newJaclyn hails from Cincinnati, where her passion for fitness began. She has devoted much of her life to learning about the body, exploring numerous workouts and physical disciplines along the way. She has taught and studied Ballet Barre technique/fitness for almost 10 years and has owned her own Barre studio.

Denah Angel Schenkman

loves the beach and is so happy to be teaching at Sandbox Fitness. She is a YogaWorks Certified instructor. She believes in having fun while working out! She loves choreographing the movements to a soundtrack. She believes in slow controlled movements so students can really learn the poses, build muscle and progress over time. Her classes really focus on breathing, deep stretching, and balance. If you want to take your yoga to the next level her classes are great.