Photo credits

Exercise photos

Most exercise photos come from the Free Exercise DB, released into the public domain.

Wall sit
Photo: PTPioneer · CC BY 2.0 · original
Burpee
Photo: Travis Isaacs (photos · photo sets) · CC BY 2.0 · original
Bird dog
Photo: PTPioneer · CC BY 2.0 · original
Walking
Photo: WrS.tm.pl · CC0 · original
Hiking
Photo: Hermann · CC0 · original
Swimming
Photo: Eponimm · CC BY 4.0 · original
Cross-country skiing
Photo: Ola Matsson · CC BY 2.0 · original
HIIT circuit
Photo: Travis Isaacs (photos · photo sets) · CC BY 2.0 · original

Equipment photos

Openly licensed photos from Wikimedia Commons. Thank you to the photographers.

Ab wheel
Photo: Corn cheese · CC BY-SA 4.0 · original
Barbell & plates
Photo: dronepicr · CC BY 2.0 · original
Weight bench
Photo: Wikideas1 · CC0 · original
Cable machine
Photo: Nenad Stojkovic · CC BY 2.0 · original
Dip station
Photo: Salgo60 · CC BY-SA 4.0 · original
Dumbbells
Photo: User:Dajo767 · Public domain · original
Exercise bike
Photo: photo taken by KMJ · CC BY-SA 3.0 · original
EZ curl bar
Photo: Richardkiwi · CC BY-SA 4.0 · original
Jump rope
Photo: Pambelle12 · CC BY-SA 4.0 · original
Kettlebell
Photo: Detlef Romeike · CC BY-SA 2.5 · original
Leg press
Photo: Teemeah · CC BY-SA 4.0 · original
Medicine ball
Photo: FASTILY · CC BY-SA 4.0 · original
Plyo box / step
Photo: Robertgombos · CC BY-SA 4.0 · original
Pull-up bar
Photo: Santeri Viinamäki · CC BY 4.0 · original
Resistance bands
Photo: Shixart1985 · CC BY 2.0 · original
Rowing machine
Photo: unknown · Public domain · original
Smith machine
Photo: Wikideas1 · CC0 · original
Squat rack / power rack
Photo: Wissembourg (talk) · CC BY-SA 3.0 · original
Stability ball
Photo: PTPioneer · CC BY 2.0 · original
Suspension trainer (TRX)
Photo: Slyngebehandling · CC BY-SA 3.0 · original
Treadmill
Photo: Wikideas1 · CC0 · original
Exercise mat
Photo: Gausanchennai · CC BY-SA 4.0 · original
Bicycle
Photo: Shisma & Alorin · CC BY-SA 4.0 · original
Swimming pool
Photo: www.localfitness.com.au · CC BY-SA 3.0 · original
Cross-country skis
Photo: Tiia Monto · CC BY-SA 4.0 · original
Elliptical trainer
Photo: Free Exercise DB · Public domain (Unlicense) · original
Stair climber
Photo: Free Exercise DB · Public domain (Unlicense) · original