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    Student demonstrating air conditioner recharging manifold with gauges in HVAC classroom — Stock Photo
    Student demonstrating air conditioner recharging manifold with gauges in HVAC classroom
    Student setting up generator experiment while instructor discusses HVAC system to student in wheelchair — Stock Photo
    Student setting up generator experiment while instructor discusses HVAC system to student in wheelchair
    Young male and female boxer exercising together in fitness studio — Stock Photo
    Young male and female boxer exercising together in fitness studio
    Sportive women making acroyoga posture double dog down on sandy beach — Stock Photo
    Sportive women making acroyoga posture double dog down on sandy beach
    Trainer assisting women in practicing yoga at fitness studio. — Stock Photo
    Trainer assisting women in practicing yoga at fitness studio.
    Fit people training over obstacle course at boot camp — Stock Photo
    Fit people training over obstacle course at boot camp
    Tennis instructor training teenage girl on tennis court. — Stock Photo
    Tennis instructor training teenage girl on tennis court.
    Cheerful instructor lifting barbell — Stock Photo
    Cheerful instructor lifting barbell
    Anonymous female friends clasping hands behind backs and meditating near candles — Stock Photo
    Anonymous female friends clasping hands behind backs and meditating near candles
    Instructor helping a woman with a Spinal Cord Injury get into a kayak — Stock Photo
    Instructor helping a woman with a Spinal Cord Injury get into a kayak
    Fitness instructor leading aerobics class — Stock Photo
    Fitness instructor leading aerobics class
    Group of people in swimwear sitting at poolside and stretching raised arms while exercising during water aerobics training with instructor in pool — Stock Photo
    Group of people in swimwear sitting at poolside and stretching raised arms while exercising during water aerobics training with instructor in pool
    Physical therapist placing reflective marking balls for gait analysis. — Stock Photo
    Physical therapist placing reflective marking balls for gait analysis.
    Female art students in art studio — Stock Photo
    Female art students in art studio
    Mid section of trainer helping male boxer in wearing boxing gloves — Stock Photo
    Mid section of trainer helping male boxer in wearing boxing gloves
    Teen girl in tennis training on court with male instructor. — Stock Photo
    Teen girl in tennis training on court with male instructor.
    Side view of calm female teacher in white activewear showing Utthita Balasana with closed eyes against group of people repeating asana during yoga session in park in sunny day — Stock Photo
    Side view of calm female teacher in white activewear showing Utthita Balasana with closed eyes against group of people repeating asana during yoga session in park in sunny day
    Teenage tennis player practicing serving with coach. — Stock Photo
    Teenage tennis player practicing serving with coach.
    Asian woman working with trainer at gym — Stock Photo
    Asian woman working with trainer at gym
    Fitness instructor guiding woman in exercise class — Stock Photo
    Fitness instructor guiding woman in exercise class
    Fitness trainer and senior woman doing physiotherapy exercises with step platform and elastic band — Stock Photo
    Fitness trainer and senior woman doing physiotherapy exercises with step platform and elastic band
    College professor leading lesson in classroom — Stock Photo
    College professor leading lesson in classroom
    Female with male trainer riding stallions in countryside on sunny day — Stock Photo
    Female with male trainer riding stallions in countryside on sunny day
    Side view of sportive power woman standing upside down on raising leg up on wooden stand on beach — Stock Photo
    Side view of sportive power woman standing upside down on raising leg up on wooden stand on beach
    Instructor helping female paramedic using defibrillator training outdoors. — Stock Photo
    Instructor helping female paramedic using defibrillator training outdoors.
    Fitness instructor guiding exercise class stretching legs — Stock Photo
    Fitness instructor guiding exercise class stretching legs
    Boy learning rollerskating with grandfather on road with cones. — Stock Photo
    Boy learning rollerskating with grandfather on road with cones.
    Group of men's training on obstacle course at boot camp training — Stock Photo
    Group of men's training on obstacle course at boot camp training
    Students clapping for male instructor in dance class studio — Stock Photo
    Students clapping for male instructor in dance class studio
    Karate man stand your ground on tatami wearing white kimono — Stock Photo
    Karate man stand your ground on tatami wearing white kimono
    Side view of calm female in white activewear performing Halasana on mat on ground in park against green trees and cloudless blue sky in sunny day — Stock Photo
    Side view of calm female in white activewear performing Halasana on mat on ground in park against green trees and cloudless blue sky in sunny day
    People exercising, doing team building exercise in sunny park — Stock Photo
    People exercising, doing team building exercise in sunny park
    Community college instructor helping student with headphones at computer in computer lab classroom — Stock Photo
    Community college instructor helping student with headphones at computer in computer lab classroom
    Chinese woman working with trainer and ball at gym — Stock Photo
    Chinese woman working with trainer and ball at gym
    Instructor assisting a woman while practicing pilates in fitness studio — Stock Photo
    Instructor assisting a woman while practicing pilates in fitness studio
    Male fitness instructor helping athletic woman to do pull ups during workout in gym — Stock Photo
    Male fitness instructor helping athletic woman to do pull ups during workout in gym
    Side view of crop female instructor supporting woman in doing seated forward bend during yoga training on sports mat in studio — Stock Photo
    Side view of crop female instructor supporting woman in doing seated forward bend during yoga training on sports mat in studio
    Adult trainer helping unrecognizable female standing in Urdhva Dhanurasana pose while practicing yoga in summer park — Stock Photo
    Adult trainer helping unrecognizable female standing in Urdhva Dhanurasana pose while practicing yoga in summer park
    Front view of a young Caucasian woman and a young Caucasian man standing with a young Caucasian female instructor holding a clipboard during a bootcamp training session at an outdoor gym — Stock Photo
    Front view of a young Caucasian woman and a young Caucasian man standing with a young Caucasian female instructor holding a clipboard during a bootcamp training session at an outdoor gym
    Grandfather and grandson enjoying rollerskating in summer park. — Stock Photo
    Grandfather and grandson enjoying rollerskating in summer park.
    Little boy in winter clothing learning skiing with father at snowy resort. — Stock Photo
    Little boy in winter clothing learning skiing with father at snowy resort.
    Happy group of friends preparing to zip lining — Stock Photo
    Happy group of friends preparing to zip lining
    Father and son riding on ski lift at winter resort. — Stock Photo
    Father and son riding on ski lift at winter resort.
    Tennis instructor working with teenage player on service. — Stock Photo
    Tennis instructor working with teenage player on service.
    Relaxed woman performing aerial yoga hanging head down — Stock Photo
    Relaxed woman performing aerial yoga hanging head down
    Energetic fitness instructor leading aerobics class — Stock Photo
    Energetic fitness instructor leading aerobics class
    Tennis instructor working with teenage girl under sun. — Stock Photo
    Tennis instructor working with teenage girl under sun.
    Female trainer assisting female boxer in lifting barbell at fitness studio — Stock Photo
    Female trainer assisting female boxer in lifting barbell at fitness studio
    Portrait of male boxer standing with boxing gloves at fitness studio — Stock Photo
    Portrait of male boxer standing with boxing gloves at fitness studio
    Young asian woman standing with raised arms against window — Stock Photo
    Young asian woman standing with raised arms against window
    Rural female teacher and chinese pupils using laptop computer in classroom — Stock Photo
    Rural female teacher and chinese pupils using laptop computer in classroom
    Focused young female instructor standing in Warrior II position while practicing yoga with student in modern fitness studio — Stock Photo
    Focused young female instructor standing in Warrior II position while practicing yoga with student in modern fitness studio
    Adolescent girl serving tennis balls in tennis lesson. — Stock Photo
    Adolescent girl serving tennis balls in tennis lesson.
    Fit men training over tyres obstacle course at boot camp — Stock Photo
    Fit men training over tyres obstacle course at boot camp
    Male instructor and students in shop class workshop — Stock Photo
    Male instructor and students in shop class workshop
    Physical therapist measuring height of teenage boy. — Stock Photo
    Physical therapist measuring height of teenage boy.
    Preschooler boy skiing with male instructor. — Stock Photo
    Preschooler boy skiing with male instructor.
    Chef and students with Down Syndrome looking at recipes in kitchen — Stock Photo
    Chef and students with Down Syndrome looking at recipes in kitchen
    Trainer instructing group of senior women while performing yoga in yoga center — Stock Photo
    Trainer instructing group of senior women while performing yoga in yoga center
    Physical therapist measuring teenage boy chest. — Stock Photo
    Physical therapist measuring teenage boy chest.