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    Professor discussing sensors and thermostats with students in an HVAC classroom — Stock Photo
    Professor discussing sensors and thermostats with students in an HVAC classroom
    Woman with a Spinal Cord Injury being helped by an instructor to use a kayak — Stock Photo
    Woman with a Spinal Cord Injury being helped by an instructor to use a kayak
    Instructor with water noodle with baby boy and mother playing in pool. — Stock Photo
    Instructor with water noodle with baby boy and mother playing in pool.
    Tennis instructor training adolescent girl in summer. — Stock Photo
    Tennis instructor training adolescent girl in summer.
    Female instructor in sportswear teaching two women lying in balasana position on sports mats on wooden floor in spacious workout room — Stock Photo
    Female instructor in sportswear teaching two women lying in balasana position on sports mats on wooden floor in spacious workout room
    Primary school students sitting and writing in rural primary school — Stock Photo
    Primary school students sitting and writing in rural primary school
    Female paramedic CPR training on baby dummy with instructor outdoors. — Stock Photo
    Female paramedic CPR training on baby dummy with instructor outdoors.
    Hands of unrecognizable medic checking the eye of the boxer on boxing ring. — Stock Photo
    Hands of unrecognizable medic checking the eye of the boxer on boxing ring.
    Full length of concentrated young multiracial female friends in activewear performing Warrior II pose on grassy lawn while doing yoga together in green park — Stock Photo
    Full length of concentrated young multiracial female friends in activewear performing Warrior II pose on grassy lawn while doing yoga together in green park
    Portrait happy, confident mature businesswoman wearing lanyard — Stock Photo
    Portrait happy, confident mature businesswoman wearing lanyard
    Fit men training over obstacle course at boot camp — Stock Photo
    Fit men training over obstacle course at boot camp
    Trainer helping woman with exercise — Stock Photo
    Trainer helping woman with exercise
    Trainer interacting with male boxer in fitness studio — Stock Photo
    Trainer interacting with male boxer in fitness studio
    Teacher supervising high school students taking exam at desks — Stock Photo
    Teacher supervising high school students taking exam at desks
    Chinese ballet instructor teaching girls in ballet studio — Stock Photo
    Chinese ballet instructor teaching girls in ballet studio
    Teenagers dancing in dance class studio — Stock Photo
    Teenagers dancing in dance class studio
    Man with spinal cord injury in an adaptive cart at golf putting green with an instructor — Stock Photo
    Man with spinal cord injury in an adaptive cart at golf putting green with an instructor
    Sportive power woman performing stretching with help of hammock for aerial yoga on wooden stand on sandy beach — Stock Photo
    Sportive power woman performing stretching with help of hammock for aerial yoga on wooden stand on sandy beach
    Tennis instructor polishing serving posture with student. — Stock Photo
    Tennis instructor polishing serving posture with student.
    Woman in boxing gloves standing in fighting position and looking at camera during training — Stock Photo
    Woman in boxing gloves standing in fighting position and looking at camera during training
    Teen girl in tennis training on court with male instructor. — Stock Photo
    Teen girl in tennis training on court with male instructor.
    Coach helping woman while practicing pilates in fitness studio — Stock Photo
    Coach helping woman while practicing pilates in fitness studio
    Senior business people using laptops and digital tablets in conference room meeting — Stock Photo
    Senior business people using laptops and digital tablets in conference room meeting
    Portrait smiling chef teacher and students in cooking class kitchen — Stock Photo
    Portrait smiling chef teacher and students in cooking class kitchen
    Sportive bearded male training on tranquil idyllic meadow and doing yoga asana against blue sky — Stock Photo
    Sportive bearded male training on tranquil idyllic meadow and doing yoga asana against blue sky
    Male trainer assisting female boxer in doing push ups in fitness studio — Stock Photo
    Male trainer assisting female boxer in doing push ups in fitness studio
    Instructor discussing air conditioner recharging with students in HVAC classroom one student in wheelchair — Stock Photo
    Instructor discussing air conditioner recharging with students in HVAC classroom one student in wheelchair
    Woman pulling ropes and working out in the gym — Stock Photo
    Woman pulling ropes and working out in the gym
    Boy kicking in Taekwondo class with trainer. — Stock Photo
    Boy kicking in Taekwondo class with trainer.
    Teen girl in tennis training on court with male instructor. — Stock Photo
    Teen girl in tennis training on court with male instructor.
    Unrecognizable women in white clothes standing with raised arms and performing Virabhadrasana B during yoga lesson in park in sunny day — Stock Photo
    Unrecognizable women in white clothes standing with raised arms and performing Virabhadrasana B during yoga lesson in park in sunny day
    Woman and girls preparing horse for horseback riding in paddock — Stock Photo
    Woman and girls preparing horse for horseback riding in paddock
    Trainer helping a woman while practicing pilates in fitness studio — Stock Photo
    Trainer helping a woman while practicing pilates in fitness studio
    Trainer helping woman while practicing pilates in fitness studio — Stock Photo
    Trainer helping woman while practicing pilates in fitness studio
    Strong coach in sportswear helping athletic client and doing barbell workout in modern gym — Stock Photo
    Strong coach in sportswear helping athletic client and doing barbell workout in modern gym
    Smiling women practicing judo in gym — Stock Photo
    Smiling women practicing judo in gym
    Trainer assisting male boxer to wear headgear in fitness studio — Stock Photo
    Trainer assisting male boxer to wear headgear in fitness studio
    Portrait smiling, confident young woman preparing to zip line — Stock Photo
    Portrait smiling, confident young woman preparing to zip line
    Smiling female trainer in sportswear helping cheerful girl with stretching legs while warming up before fitness workout — Stock Photo
    Smiling female trainer in sportswear helping cheerful girl with stretching legs while warming up before fitness workout
    Rout setter trying new bouldering problems at indoor climbing wall — Stock Photo
    Rout setter trying new bouldering problems at indoor climbing wall
    Female community college instructor leading lesson in classroom — Stock Photo
    Female community college instructor leading lesson in classroom
    Rural female teacher and chinese pupils using laptop computer in classroom — Stock Photo
    Rural female teacher and chinese pupils using laptop computer in classroom
    Rural female teacher and chinese pupils using laptop computer together in school — Stock Photo
    Rural female teacher and chinese pupils using laptop computer together in school
    Chef teacher and students using hand mixer in cooking class kitchen — Stock Photo
    Chef teacher and students using hand mixer in cooking class kitchen
    Adult male instructor behind senior female athlete during suspension training near sports equipment in gymnasium — Stock Photo
    Adult male instructor behind senior female athlete during suspension training near sports equipment in gymnasium
    Happy chef and students with Down Syndrome baking in kitchen — Stock Photo
    Happy chef and students with Down Syndrome baking in kitchen
    Students practicing making medical splint in training class — Stock Photo
    Students practicing making medical splint in training class
    Fit men training over tyres obstacle course at boot camp — Stock Photo
    Fit men training over tyres obstacle course at boot camp
    Trainer helping a woman while practicing pilates in fitness studio — Stock Photo
    Trainer helping a woman while practicing pilates in fitness studio
    Full body side view of calm slim females doing Extended Childs pose while stretching body and relaxing during yoga class together in fitness studio — Stock Photo
    Full body side view of calm slim females doing Extended Childs pose while stretching body and relaxing during yoga class together in fitness studio
    Young asian sporty woman making stretching near lake — Stock Photo
    Young asian sporty woman making stretching near lake
    Trainer assisting male boxer in wearing boxing gloves at fitness studio — Stock Photo
    Trainer assisting male boxer in wearing boxing gloves at fitness studio
    Low angle back view of female trainer supporting male alpinist in harness climbing artificial wall in bouldering center — Stock Photo
    Low angle back view of female trainer supporting male alpinist in harness climbing artificial wall in bouldering center
    Female professor and college students using computer in computer lab — Stock Photo
    Female professor and college students using computer in computer lab
    Cheerful athlete couple giving high five after helping handicapped sportsman on horizontal bar training in gym — Stock Photo
    Cheerful athlete couple giving high five after helping handicapped sportsman on horizontal bar training in gym
    Boyfriend helping girlfriend with zip line helmet — Stock Photo
    Boyfriend helping girlfriend with zip line helmet
    Sportive power woman hanging upside down on hammock for aerial yoga holding on leg in wooden stand on beach — Stock Photo
    Sportive power woman hanging upside down on hammock for aerial yoga holding on leg in wooden stand on beach
    Boy in swimming class with instructor in swimming pool. — Stock Photo
    Boy in swimming class with instructor in swimming pool.
    Concentrated female trainer in sportswear teaching man performing Virabhadrasana pose during yoga session in studio — Stock Photo
    Concentrated female trainer in sportswear teaching man performing Virabhadrasana pose during yoga session in studio
    Female photography instructor helping student with digital camera at computer in classroom — Stock Photo
    Female photography instructor helping student with digital camera at computer in classroom