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Sexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorter Sexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorterSexually mature dogs are in heat twice a year. The spring season is from march to may, and the autumn season is from September to November, with an interval of about six months. In the case of females, female estrus is marked by vaginal bleeding: vaginal bleeding generally lasts about 21 days, but vaginal bleeding in older females may be a day or two shorter

Normally we accept T/T and Western Union. Normally we accept T/T and Western Union.     1, place It refers to the muscle area to be trained in a single exercise. For beginners, the concept of parts is more rough, general. The body of the pectorals, dorsal muscles, biceps, etc. For professional athletes, the concept of body parts is yoga yoga More detailed and precise. For example, upper margin, lower margin, middle bundle, outer margin, inner margin, lower outer Angle, lower inner Angle of pectoralis major, etc.   2, the action, When you're training a muscle group, you're doing a few exercises. For beginners, one or two exercises per area is enough; For athletes, there are sometimes as many as six to eight movements in one area. 3, group number In fitness training, the number of groups for each movement ranges from 1 or 2 to 7, 8, or even a dozen. It depends on the training stage, purpose and level. Generally speaking, beginners do 1-4 sets of each movement, medium and high-level athletes and fitness enthusiasts do 4-6 sets/movements. Number 4, Refers to the number of repetitions that can be completed when a set of exercises is exhausted. (also known as the effective times) generally less than 6 are used to improve muscle strength, which is mainly used to improve the absolute strength of muscles. 8-10 repetitions are moderate and can be used to increase muscle volume and circumference.